It's also the prime reason boat propellers get worn down, cavitation bubbles constantly hit the surface until they form dents in the metal all the way until there are giant holes in the blades
@@EvilNeonETCwouldn’t that make each individual blade smaller and therefore easier to deform. Like the ratio of size to force experienced would be the same… I think
I saw a video of Elon Musk explaining cavitation in relation to a rocket engine and it got me really interested in the subject it’s fascinating that these concepts play a role in what most people consider far advanced science when in reality rocket science is grounded in very basic concepts
@@kovyb6867 Without the booster, she would've gotten a way worse infection and died. The vaccine reduces the severity of a covid-19 illness significantly. Vaccinated people on average suffer less severe forms of covid-19 than unvaccinated people. This fact is heavily ignored by the anti-science crowd.
@@alyschneider3417 Yeah, and it is funny that she demonstrates this "party trick" with a hammer, while calling it a "party trick". People who wouldn't know better, would arrive at a party with a hammer. xD ^^
This is the same principle of how a torpedo sinks a ship. You don't want the torpedo to hit the side and then go boom, you want it to go boom under the ship causing a large cavitation bubble where the water is no longer supporting the keel of the ship. Because the ship is no longer being supported by water it snaps in two under its own weight.
Ikr? Is it a vacuum? Is it air? I mean I get it that the bottle moves downwards faster than the water inside, but how come it's bubbles? It's a curious phenomenon
Without blood there is no life and without Jesus Blood no Eternal life. The Gospel is 1 Corinthians 15:1-4 Moreover, brethren, I declare unto you the GOSPEL which I preached unto you, which also ye have received, and wherein ye stand; By which also ye are SAVED, if ye keep in memory what I preached unto you, unless ye have believed in vain. For I delivered unto you first of all that which I also received, HOW THAT CHRIST DIED FOR OUR SINS ACCORDING TO THE SCRIPTURES; AND THAT HE WAS BURIED, AND THAT HE ROSE AGAIN THE THIRD DAY ACCORDING TO THE SCRIPTURES. Ephesian 1:13=In whom ye also TRUSTED, after that ye heard the word of truth, the GOSPEL of your SALVATION: in whom also after that ye BELIEVED, ye were SEALED with that holy Spirit of promise. Ephesian 2:8-9=For by GRACE are ye SAVED through FAITH; and that not of yourselves: it is the gift of God: Not of WORKS, lest any man should boast. Romans 3:23-26=For all have sinned, and come short of the glory of God; Being JUSTIFIED FREELY by his GRACE through the REDEMPTION that is in Christ Jesus: Whom God hath set forth to be a PROPITIATION through FAITH in his BLOOD, to declare his righteousness for the remission of sins that are past, through the forbearance of God; To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which BELIEVETH in Jesus. Without blood there is no life and without Jesus BLOOD no eternal life. ua-cam.com/video/lbb4xwYj19g/v-deo.html Look up Robert Breaker on youtube. Book Dispensational Truth or God's Plan and Purpose in the Ages by Clarence Larkin 2 Timothy 2:15
Dianna, I miss your humor, your knowledge, your lessons, your energy. That's what I miss for MY benefit. Most important, I miss for YOU having the things that make you happy and fulfilled. Keep fighting, You'll get them back and we'll all smile!
@hiddenasmraccount5528 No, they meant Diana (physics girl) aka the girl in the video. She has really bad long covid and has been more or less bed ridden for a couple years now. This is a clip from an old video, processed as a short.
@BoutThatAction 🤦♂️where have you been since 2020? 😂 long covid is basically just as mysterious in terms of symptomatology as covid, but it specifically refers to long-term negative effects from the physical toll of an initial covid infection. So basically, if you got cardiac (heart) or pulmonary (lung) scarring from covid, neurological symptoms/changes from covid, or any other physical damage that covid caused to your system, you could then possibly experience a whole host of complications on an ongoing (sometimes permanent) basis and the symptomatology (like covid) is kinda all over the place, unique to each individual, and does not respond to treatment in the same way that symptoms typically would pre covid. Some people have arrhythmias, permanent brain fog, weakness, lethargy, trouble breathing, coordination issues, cognition issues, and various other conditions as a direct result of lasting damage from an initial covid infection.
Reminds me of the mantis shrimp strike. They create more damage because of the created vaporized water pocket, Not just the force of the strike itself.
Did you know that depth changes aren't made to hit subs directly but instead to create immense pressure by exploding displacing water than the water implodes back into place creating pressure waves that rupture the hull of the sub
@@zakgrubb7512 subs are made after all to withstand positive pressures acting towards it. Hence why they're heavily pressurized from the inside to not buckle, however when you cause a cavitation in the water, you create a negative pressure acting on the sub and the internal pressure vs the extremely low pressure outside of it, causes the rupturing of the hull. Science is neat.
Just drink a beer and fill the bottle with water. Also it is still a strength test of sorts, so practice when the people you want to impress aren’t around.
That is because it basically breaks instantly. Glas is a very hard but also very brittle material. Unlike steel there accures no kind of deformation processes before breaking. Or at least only a little.
@@codyfeiler911I was thinking that myself. Didn’t they have to go to like 100,000 FPS before you could see the cracking of the glass travel? Or was it higher?
You can also open tightly sealed jars by turning them upside down and hitting the bottom with your palm like that a few times. Same principal loosens the lid.
But he really was right except using a wrong word. It's not vacuum it's preasure. You cannot make a bottle crack if you dont create a preasure inside the bottle. So you need to provide both. The better your technique is the less physical strength you need to crack it.
@@amrokaswell she has to pretend as if he's wrong otherwise it looks like exactly what it is: her stealing a video idea from a much less popular youtuber
@@amrokasnaw hes wrong. his explanation was saying that there was air pressure from compressed air. compressed air does not make a strong enough force to break it.
Similarly, mantis shrimp strikes also create cavitation bubbles that collapse and deal more than twice the damage of the initial strike. Edit: yes it is like Yuji's divergent fist in JJK
@philrod1 not exactly, she not only neglected but disregarded the immediate pressure stored in the neck of the bottle. Without that high pressure stored there the collapsing cavitation bubbles would not create downward force of inertia to pop the seal on the bottle. It would simple escape the bottle neck.
@@TheDeepDiveLLC The only thing that would create pressure in the neck would be how much air you force into the neck, which would be negligable. You are pretty much just capping the bottle really fast. You could add way more pressure blowing into the bottle which would do absolutely nothing.
@@coffeecrispy2673yea well that booster gave me tachycardia I had zero heart issues before and there are thousands like me with the same pop up heart issue. My dr said there’s a ton of Lawsuits in the works
@@Fatboy50005 I decided to quickly look it up and this is what I could find: "However almost a year ago she contracted Covid, but unlike most of us who did, she suffered long-covid symptoms of myalgic encephalomyelitis/chronic fatigue syndrome, or ME/CFS"
Hey um....I'm new to this channel and ....tell me what happened to her....like she seems totally fine thi me pls if you are reading this then answer me 🙏
@@theultimateyoutuber1She has caught up a longer version of covid...she's dealing with it for over a year now, it may take few years for her to recover completely 🙁
@theultimateyoutuber1 debilitating long covid has robbed her of many normal functions. Each step forward seems to be followed with a good shove backwards. But she and her partner are doing what they can.
THANK YOU for making videos like this. My 13 yr old has been interested in science and math for a while now but has really just started to get into the physics of the how and whys of it all. His school started a robotics club this year, and he was able to join the team. They're competing against other schools this year, too, and he's so excited. So now, he's been watching vids on YT about science, physics, how and why things work the way they do, etc. I'm 1000% saving this video and will be showing him your channel. Awesome explanation, awesome demonstration, and amazing video!
@@Pooopers do you have any info about her health because she is in quarantine for like 3 months. What kind of covid varient does she get? I had been affected by covid twice and i recovered in just a week both times, so what's the deal with her?
@@rpnimavat3074Long Covid is absolutely debilitating and can last more than a year. It usually comes with chronic fatigue syndrome which can genuinely ruin your life.
Almost a year without updates. I hope dianna is doing well. I watched her videos for years and fell in love with science communication as a dream job because of her 💕
Seeing a bubble collapse in slow motion for the first time was actually really cool to see. The amazing things that occur on the smallest scales is utterly amazing. This was a really neat experiment
Thank you Diana for making us curious and educating us about the interesting physics in the world around us. Wishing each day for you is better than the last.
Yes it requires liquid, can use beer or soda, but it will foam up if you don’t get it right the first time making a mess. The bottle break will run up the sides into the neck(where you’re holding it)sometimes, so gotta be careful of that.
Me too and yes you need water in the bottle. I think you had to hit it harder with beer. As another commenter said you can cut your hand, I cut mine once but it wasnt to bad.,.
@@varun2250 Dianna Cowern aka Physics Girl contracted COVID and has experienced symptoms known collectively as long COVID which include extreme mental and physical fatigue. Her husband has helped continue to manage things including her UA-cam videos online.
Get well soon Diana, wishing you our best for your health and recovery. ❤️🩹 We’re thankful for your inspiration and your warm, bright energy. Stay strong 💪 you can do it!
@Curly_Fry.d haha, true! It’s all related for sure, but this to me is more like cavitation in a pump or propeller, vs piping system water hammer. Regardless, it’s all cool stuff.
Actually, nope. Cavitation and water hammer are very different phenomenon. Cavitation happens bc bubbles go from high pressure to low pressure zone and literally explode; watter hammer is bc the inertia of water moving inside a pipe and suddenly closing the valves, making water hit the components of the system. In the case it might seem the inertia of water provokes cavitation, but water is static, it is the bottle what is moving, water didn't press on the bottle.
Is Diana the video poster? Does her illness make her crow like a wookie? I wasn't sure what was wrong with her when she was smacking the bottle with the hammer. R.I.P.
@@chemijaymantis shrimp punch so hard the punch goes as fast as a bullet. But the real damage is the impact bubble they leave behind that gets to 8500 degrees Fahrenheit. Also they have 16 color receptors, they can see in Uv visible and polarized light.
I love that they're running some of her older shows I'm hoping and sending positive energy to her that she recovers from her covid long disease I love physics girl and the image that she provides as a mentor to two young girls and women❤❤❤
The phenomenon is called Hydraulic Shock or more commonly referred to as Water Hammer and the mathematical equation for it is Δp=cdΔv; where Δp is the change in pressure [lb/ft2 (kg/m2)]; c is the velocity of pressure wave traveling back toward the water sources [ft/sec (m/sec)]; d is the mass density of water [1.9 slugs/ft3 (979.2 kg/m3)]; and Δv is the change in water velocity [ft/sec (m/sec)].
Yes, you are correct. The phenomenon you're referring to is indeed known as water hammer, or hydraulic shock. Water hammer occurs in a fluid (like water) when there is a sudden change in the flow rate, leading to a rapid change in pressure. The equation you provided, Δp = cdΔv, is a simplified form of the water hammer equation and is commonly used to estimate the change in pressure caused by water hammer. Here's a breakdown of the variables in the equation: Δp: Change in pressure (resulting from water hammer) c: Velocity of the pressure wave traveling back toward the water source d: Mass density of water Δv: Change in water velocity This equation helps in understanding and predicting the effects of water hammer in a fluid system. Water hammer can occur in pipelines, plumbing systems, and other fluid transport systems when there are sudden changes in flow, such as the closing of a valve or the abrupt stopping of flowing water. Managing water hammer is important to prevent damage to pipes and equipment in these systems.
was just thinking about Diana the other day. Really hoping she's recovering. It's been so heartbreaking to see something so insidious happen to someone so full of joy and wonder.
Diana, your team took this idea/explanation/understanding (in the fashion you've explained - not the phenomenon as a whole, or the casual/typical explanation), from another major youtuber. Not the 'youtuber' described in the video that sent your B.S meter off, but another science-oriented channel like yourself (vsauce, Veritasium, plenty more). I'd prefer to learn new concepts when seeing your videos.
@@turnleft8645No, but she has COVID-induced ME/CFS for almost a year now. So she's bedridden and can barely move, or think or talk. It's a horrible disease where even the slightest stimuli can collapse the body for weeks or even months :(
@@timmzie2362She has Long Covid, which can debilitate those afflicted with it for years. She’s had it for a little over 2 years now, and I sincerely hope she can start living life to the fullest again soon
@@tink6225she is having long term issues from COVID. It's pretty much given her chronic fatigue that's made her unable to do anything. Her husband has been her caregiver since she got sick.
That makes more sense. I was immediately skeptical about the purported explanation - yeah, there could be a pretty small pressure wave in the compressible air inside the bottle, but it would not transfer much energy or momentum to the heavier incompressible liquid. Thanks for the real explanation.
First of all, I hope you feel well. Cavitation is the same reason centrifugal pump, impellers are destroyed by restricted suction, causing the same affect.
Also how ultrasonic cleaners work. To test if they are working, often a sheet of aluminum foil is dropped in and if working, thousands of micro holes are formed through it.
Glad your legacy (incomplete, and prematurely **paused**) lives on and you’re still teaching us and sharing your love of physics. Hope you and your team/family are seeing tiny improvements every day. We miss you.
Btw, that’s how torpedoes works against battleships, they create an area in which there is not water in anymore just for the water to collapse rapidly on the enemy ship’s hull to create a crack in it.
@@Plutonium.2 basically, the sudden change of pressure and temperature makes the water go from liquid to gas, and back the other way around as the change is quickly cancelled by the surrounding water that is making the vapor unable to escape so it turns back to water, collapsing insanely quickly on the hull of the ship, cracking it
Hope you’re doing well, we miss you. Every time I hear about long covid I think “I hope Diana’s doing okay”. No matter how long it takes you to recover we’ll be here. You got this!
@@jomama7210 Now i don't know all the particulars of what is true and what is not. But the mRNA vaccine got alot of people talking who used to trust vaccines. I wouldn't conflate antivaxxers with people who talk about mRNA vaccines
Except her science BS meter is broken and even tho they filmed it, she is wrong. Why did it take here multiple hits with the robber mallet to make the bottle brake?
@@theamericanopry But she's not wrong. The bottle breaks exactly how she explains it. By cavitation bubbles. Multiple groups have covered this. I think even mythbusters have done it too.
@@theamericanopryVery likely she didn't hit it hard enough or had a poor angle, which would change the size of the low-pressure area, and prevent enough cavitation bubbles from forming and transferring enough force
@@justinmcgough3958but she said her “bs meter” was going off and then she explained exactly what the original guy said just more in depth. And then took all credit for the explanation while simultaneously discrediting the original guys video when all she did was explain quite literally the exact same thing.
It's also the prime reason boat propellers get worn down, cavitation bubbles constantly hit the surface until they form dents in the metal all the way until there are giant holes in the blades
how does one reduce this?
@@datona13my assumptions are more numbers of smaller blades
@@EvilNeonETCwouldn’t that make each individual blade smaller and therefore easier to deform. Like the ratio of size to force experienced would be the same… I think
I saw a video of Elon Musk explaining cavitation in relation to a rocket engine and it got me really interested in the subject it’s fascinating that these concepts play a role in what most people consider far advanced science when in reality rocket science is grounded in very basic concepts
Either lower speed or get better turbine material
take care Diana! we are rooting for your recovery
She just needs more boosters.
@@kovyb6867 Without the booster, she would've gotten a way worse infection and died.
The vaccine reduces the severity of a covid-19 illness significantly. Vaccinated people on average suffer less severe forms of covid-19 than unvaccinated people. This fact is heavily ignored by the anti-science crowd.
@@kovyb6867stay away from those experimental injections
But is she be ded yet tho, cuz I bet the dude on is she be ded yet tho 🤔
@@kovyb6867unfounded vaccine skepticism is a position drenched in blood.
"Hey, I know this one cool party trick!"
*smashes bottle with a hammer*
😐
So this is what Maureen ponderosa is up to
Typically it’s not done with a hammer, but with the palm of one’s hand. Hence why it’s called a party trick
Because science
It's a rubber mallet. A hammer would just smash the bottle 🎉
@@alyschneider3417 Yeah, and it is funny that she demonstrates this "party trick" with a hammer, while calling it a "party trick". People who wouldn't know better, would arrive at a party with a hammer. xD ^^
This is the same principle of how a torpedo sinks a ship. You don't want the torpedo to hit the side and then go boom, you want it to go boom under the ship causing a large cavitation bubble where the water is no longer supporting the keel of the ship. Because the ship is no longer being supported by water it snaps in two under its own weight.
Didn't know that, cool. But don't the torpedos always hit the side of the boat or a submarine? So how is, what you said achievable?
@@Sin_Of_GreedWhat makes you think they always hit the side?
@@DragonSong5 doubt this guy realizes he's one google away from learning that Torpedoes aren't designed to hit the target at all....
Google is everyone's friend...also, Wikipedia and the sources at the bottom of each wiki page. Y'all have some reading to do 😂
Torpedos can be designed for both point detonation and under-keel detonation, as far back as the 1930s at least.
I think the seeing those bubbles form is better than the actually trick itself
Ikr? Is it a vacuum? Is it air? I mean I get it that the bottle moves downwards faster than the water inside, but how come it's bubbles? It's a curious phenomenon
Bubbles, cool.
@@karlbarros2849 cavitation bubbles very cool
But you can't show the bubbles on the party unless you got that million dollar camera lol
@@JohnnoNonno In solids and liquids,
I get excited everytime i see a new upload. Keep thinking she's back, but then realise the team is helping her. You've got this Diana!
This is the first video I found for this account. What happened to her?
Covid
@@jeremychavez8881long covid, she's been struggling for over a year now.
Is this princess Diana? Cus I’ve got bad news
@@jeremychavez8881She had covid and the long covid symptoms. A lot of brain fog and worse.
Slow motion cameras are like a portal to another world
Without blood there is no life and without Jesus Blood no Eternal life. The Gospel is 1 Corinthians 15:1-4 Moreover, brethren, I declare unto you the GOSPEL which I preached unto you, which also ye have received, and wherein ye stand; By which also ye are SAVED, if ye keep in memory what I preached unto you, unless ye have believed in vain. For I delivered unto you first of all that which I also received, HOW THAT CHRIST DIED FOR OUR SINS ACCORDING TO THE SCRIPTURES; AND THAT HE WAS BURIED, AND THAT HE ROSE AGAIN THE THIRD DAY ACCORDING TO THE SCRIPTURES. Ephesian 1:13=In whom ye also TRUSTED, after that ye heard the word of truth, the GOSPEL of your SALVATION: in whom also after that ye BELIEVED, ye were SEALED with that holy Spirit of promise. Ephesian 2:8-9=For by GRACE are ye SAVED through FAITH; and that not of yourselves: it is the gift of God: Not of WORKS, lest any man should boast. Romans 3:23-26=For all have sinned, and come short of the glory of God; Being JUSTIFIED FREELY by his GRACE through the REDEMPTION that is in Christ Jesus: Whom God hath set forth to be a PROPITIATION through FAITH in his BLOOD, to declare his righteousness for the remission of sins that are past, through the forbearance of God; To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which BELIEVETH in Jesus. Without blood there is no life and without Jesus BLOOD no eternal life. ua-cam.com/video/lbb4xwYj19g/v-deo.html Look up Robert Breaker on youtube.
Book Dispensational Truth or God's Plan and Purpose in the Ages by Clarence Larkin 2 Timothy 2:15
Interesting thought! That made me think that "Slow-motion" was another plane of existence and our cameras are the windows into them. Cool
@@mj_b23yes and like super zoomed in cameras i always wonder what the tiny one celled creatures are doing rn lmao
Watch out before you set off this old ladies bs meter again
Especially when you see your own cells at work very interesting
I’ve always loved the way you present physics. You make it accessible to pretty much everyone.
This is an OLD OLD school trick to make an instant weapon for a bar fight. Works pretty well.
The singer from skindred got attacked that way some girl stabbed him in the neck with a bottle
wouldnt you just like ... break the bottle against something instead ?
No , you risk the whole bottle breaking or cutting yourself if u do that
🧢
@@lachnloaded2 That’s exactly what I was thinking.
You do this at my party and you’re getting yeeted out the front door
Yeet me out the window pls
@@salangnguyen3463 do this at my wedding then
if you say the word yeeted you ain’t even making into the front door
@@d.m.j687 it’s my party Mr, I make the rules
You took the long way to say that the dude was right 😂😂😂
This is why parties are so much more fun when they are not at your own house.
Lol
Can you imagine if you broke the bottom of a bottle in your own house? That would be lunacy!!
Me, I drink from the other end...
Yeah, mindless fun over intelligent fun, the age old conflict 🙄
I'd rather party with her.
Dianna, I miss your humor, your knowledge, your lessons, your energy. That's what I miss for MY benefit. Most important, I miss for YOU having the things that make you happy and fulfilled. Keep fighting, You'll get them back and we'll all smile!
Good news! She sitting up and talking again! Improvements are being seen! Now she needs to rehab her body. But it was wonderful to hear her speak!
@@ddewittfulton I was amazed to see that video the other day, looks very promising for her and her family
We continue to pray for your full recovery. The joy & wonder you bring to science is of tremendous worth.
Huh?
@@lukasaoo88maybe this person is mixed up with Giertz .... Years ago??
@hiddenasmraccount5528 No, they meant Diana (physics girl) aka the girl in the video. She has really bad long covid and has been more or less bed ridden for a couple years now. This is a clip from an old video, processed as a short.
@@blueburger4wtf is "long covid"???
@BoutThatAction 🤦♂️where have you been since 2020? 😂 long covid is basically just as mysterious in terms of symptomatology as covid, but it specifically refers to long-term negative effects from the physical toll of an initial covid infection. So basically, if you got cardiac (heart) or pulmonary (lung) scarring from covid, neurological symptoms/changes from covid, or any other physical damage that covid caused to your system, you could then possibly experience a whole host of complications on an ongoing (sometimes permanent) basis and the symptomatology (like covid) is kinda all over the place, unique to each individual, and does not respond to treatment in the same way that symptoms typically would pre covid. Some people have arrhythmias, permanent brain fog, weakness, lethargy, trouble breathing, coordination issues, cognition issues, and various other conditions as a direct result of lasting damage from an initial covid infection.
Reminds me of the mantis shrimp strike. They create more damage because of the created vaporized water pocket, Not just the force of the strike itself.
I was about to type out the same comment but saw your first!😂
Did you know that depth changes aren't made to hit subs directly but instead to create immense pressure by exploding displacing water than the water implodes back into place creating pressure waves that rupture the hull of the sub
@@zakgrubb7512 subs are made after all to withstand positive pressures acting towards it. Hence why they're heavily pressurized from the inside to not buckle, however when you cause a cavitation in the water, you create a negative pressure acting on the sub and the internal pressure vs the extremely low pressure outside of it, causes the rupturing of the hull.
Science is neat.
But that strike is still terrifying lol
The punch also heats the water up To its very amazing
Hey look at my party trick *wastes a beer*
Don‘t do that with a german around, he will make you to mürbeteig😅
Just drink a beer and fill the bottle with water. Also it is still a strength test of sorts, so practice when the people you want to impress aren’t around.
fun fact: this does not work with carbonated liquids! including beer
There's more to life than alcohol
It doesn’t work with beer, it must have water in the bottle
Miss you Diana, hoping and praying your doctors continue to find new solutions to help you on your road to recovery! ❤
It always shocks me just how fast glass breaks, even in the super slow motion videos it still often looks instantaneous
Slow mo guys did a video on it
That is because it basically breaks instantly. Glas is a very hard but also very brittle material. Unlike steel there accures no kind of deformation processes before breaking. Or at least only a little.
@@codyfeiler911I was thinking that myself. Didn’t they have to go to like 100,000 FPS before you could see the cracking of the glass travel? Or was it higher?
@@virtual_bomber5698 i think higher because the speed glass breaks like 1500 ms and i think it was 400k frames or even higher
@@kazboven9744 1500 ms = 1.5 seconds
I feel like there will be a fighting technique created around this in the next Baki
Already had
Its pretty much the reasoning behind the ear slap
What is baki even about bro 😭🙏
Please no😭💔
Baki is weird when it lands to its explanation part😅
You can also open tightly sealed jars by turning them upside down and hitting the bottom with your palm like that a few times. Same principal loosens the lid.
Always saw my mom do it, always knew it worked. Had not the slightest clue why😂
Sorry, just had to do it *Principle
How to know when to stop palming the bottom side?
@Minutes-iw2kq when you get hungry or tired
@@brenschaefer🤣🤣🤣
We LOVE you Dianna, you are AWESOME!
Praying for your recovery. 🙏
"Ding ding ding ding" oh he was right! "My science bs meter was going off" oh, nevermind then 😂
Exactly my thought lol😂
But he really was right except using a wrong word. It's not vacuum it's preasure. You cannot make a bottle crack if you dont create a preasure inside the bottle. So you need to provide both. The better your technique is the less physical strength you need to crack it.
@@amrokaswell she has to pretend as if he's wrong otherwise it looks like exactly what it is: her stealing a video idea from a much less popular youtuber
@@amrokaspressure*
@@amrokasnaw hes wrong. his explanation was saying that there was air pressure from compressed air. compressed air does not make a strong enough force to break it.
Similarly, mantis shrimp strikes also create cavitation bubbles that collapse and deal more than twice the damage of the initial strike.
Edit: yes it is like Yuji's divergent fist in JJK
That’s some mortal kombat finishing stuff right there
what is that pokemon move called?
@@Sgt_PacoBubble Beam
@@tima9734Crab Hammer is more fitting, but Bullet Punch takes the cake for me
Pistol shrimp make cavitation bubbles hotter than the surface of the sun and they can ve heard from ages away
I love the trick where you smack their beer on the table and it foams out the top 😂
Came here to say this lol
Yep lol
you can bang your bottle on the top of theirs too 😆
Banging bottles is the only way lol 🍻@@stephenshoihet2590
I’ve seen alot of people get hit with a bottle for doing this…😂 just bc it’s funny to you doesn’t mean it’s funny to everybody else 😂
I loved physics in college and this is why. The WHY to life is just fantastic. Ty
We all have you in our minds, and wish you a full recovery! You rock!
Have there been anymore updates? 😢
We do?
What ha happened to the creator, and if anything how is she uploading videos(I'm new in here so just curious)
@@rpr-aquatic5989 Actual human beings capable of empathy, do
@@OGimouse1 She's pretty much still in a fragile state, requiring heavy assistance from his husband
You're a light in this world, don't give up. We're rooting for you!
E
Cant wait till she is back making videos !! Hope for your safe recovery!!
what happened ??
She has Long Covid
@@MarkThevenotthat’s crazy. I haven’t even had it once.
@MarkThevenot long covid? Thats a thing?
@johnnybacon8675 Been a thing. Ever had a cold or chest infection and left with a cough long-term? Same idea but it's all covid symptoms.
It's been awhile since I've seen one of your videos. I hope you're getting better
That's a great demonstration of cavitation
For a second I thought you said civilization LUL
I knew it was cavitation, but never thought about why. Now I'm told, inertia seems so obvious
@philrod1 not exactly, she not only neglected but disregarded the immediate pressure stored in the neck of the bottle. Without that high pressure stored there the collapsing cavitation bubbles would not create downward force of inertia to pop the seal on the bottle. It would simple escape the bottle neck.
@@TheDeepDiveLLC that doesn't seem very well thought through
@@TheDeepDiveLLC The only thing that would create pressure in the neck would be how much air you force into the neck, which would be negligable. You are pretty much just capping the bottle really fast. You could add way more pressure blowing into the bottle which would do absolutely nothing.
Thank you for these videos! We're all rooting for your recovery.
I hope you're doing well in your recovery!!
what?
She’s a drug addict?
@@Sincewayback1997 no, she was hospitalized from covid in March and has been slowly recovering from it
@@Sincewayback1997 What an embarrassing thing to say.
@@RogerH_CxPWhat do you mean?
This came up on my fyp today. I hope you are continuing to feel better (as per recent posts). Looking forward to your next update.
I hope she gets better. I don't know her personally but she has made my life brighter and more informed even though we are strangers.
Those shots are destroying too many people’s health and taking lives
@@Palladiumavoidprobably talking about vaccines, would love to be wrong though
Someone mind filling me in on what happened I’m new to the channel this popped up in my recommended for no reason 😂
@@coffeecrispy2673yea well that booster gave me tachycardia I had zero heart issues before and there are thousands like me with the same pop up heart issue. My dr said there’s a ton of Lawsuits in the works
@@Killa_cam7she has long covid unfortunately.
I miss your enthusiasm and the way that you presented physics to us. Hope you're feeling better
That slow motion of the cavitation bubbles forming was pure art!
feeding the algorithm. Miss you
Get well soon Diana.... I wish you and everyone around you a good health....
... Why does that sound so ominous?
I'm sure the half million dollars a year in patreon income has got her feeling a lot better.
@@tomkandyyeah man I'm sure she's delighted to be so sick for so long because she is comfortably wealthy.
@@tomkandywhy do you concern yourself with what other people earn? Envy?
@@rynb93I’d happily be ill for a year in order to earn 500,000 dollars. Literally never have to work again
I hope physics girl is doing well these days and in good health.
Last I saw she’s able to sit up and talk and feed herself sometimes.
@@jademoon7938 What happened to her
@@jademoon7938 what happened to her??
wtf happen to her???
@@Fatboy50005 I decided to quickly look it up and this is what I could find: "However almost a year ago she contracted Covid, but unlike most of us who did, she suffered long-covid symptoms of myalgic encephalomyelitis/chronic fatigue syndrome, or ME/CFS"
Love seeing posts from your channel! Im hopeful you make a full recovery so you can continue making new, informative content like this.
Didn't she get sick from Trump's experimental science juice she took to protect her from Fauchi's gain of function virus?
Hey um....I'm new to this channel and ....tell me what happened to her....like she seems totally fine thi me pls if you are reading this then answer me 🙏
Yes I would like to know to I hope she gets well
@@theultimateyoutuber1She has caught up a longer version of covid...she's dealing with it for over a year now, it may take few years for her to recover completely 🙁
@theultimateyoutuber1 debilitating long covid has robbed her of many normal functions. Each step forward seems to be followed with a good shove backwards. But she and her partner are doing what they can.
THANK YOU for making videos like this. My 13 yr old has been interested in science and math for a while now but has really just started to get into the physics of the how and whys of it all. His school started a robotics club this year, and he was able to join the team. They're competing against other schools this year, too, and he's so excited. So now, he's been watching vids on YT about science, physics, how and why things work the way they do, etc. I'm 1000% saving this video and will be showing him your channel. Awesome explanation, awesome demonstration, and amazing video!
We miss you Diana! Hope your recovery is going well! 💖
She's not sick she's just lazy
@@Pooopers do you have any info about her health because she is in quarantine for like 3 months. What kind of covid varient does she get? I had been affected by covid twice and i recovered in just a week both times, so what's the deal with her?
@@rpnimavat3074in the last video (full video, not short) in her channel it's explained
@@rpnimavat3074Long Covid is absolutely debilitating and can last more than a year. It usually comes with chronic fatigue syndrome which can genuinely ruin your life.
@@TCharlieAyou should not talk about things you know nothing of. It's clear you've never struggled with this. It's definitely not psychological
Almost a year without updates. I hope dianna is doing well. I watched her videos for years and fell in love with science communication as a dream job because of her 💕
If you don't mind me asking, what happened?
@@AarthiKrishnan She has chronic diseases and is bed ridden due to long covid
@@AarthiKrishnan she was recently hospitalized due to a unseen gas leak within her home
What? No, she had (has?) really bad long covid symptoms.
@@AarthiKrishnanlong covid.
Its so good to see her like this. I hope you get well soon, Diana.
Seeing a bubble collapse in slow motion for the first time was actually really cool to see. The amazing things that occur on the smallest scales is utterly amazing. This was a really neat experiment
Thank you Diana for making us curious and educating us about the interesting physics in the world around us. Wishing each day for you is better than the last.
Hope you’re feeling better and keep feeling better!
Feeling better?
@@RJ-ss8htyes shes suffering from long covid and has been on bed rest for 2 years now
Has there been any updates since the last one?
@@thepirateking.4521 😳
@@F1REPROOFED No idea mate, though she posted some Halloween costumes but even there she was on bed. hoping she gets well soon
I used to do this all the time when I was younger, it’s hurts your hand but it blows peoples mind if you can pull it off
Do you have to have water in the bottle
Is it hard to do?
Yes it requires liquid, can use beer or soda, but it will foam up if you don’t get it right the first time making a mess.
The bottle break will run up the sides into the neck(where you’re holding it)sometimes, so gotta be careful of that.
Me too and yes you need water in the bottle. I think you had to hit it harder with beer. As another commenter said you can cut your hand, I cut mine once but it wasnt to bad.,.
@@ijuggle42 is it common to cut yourself doing this
I've seen exactly this explanation maybe in 2 or 3 shorts already but it's nice seeing it in slow motion!
I find it too much for too little to offer irl but hella interesting during this video, especially slow mo
It makes sense since the idea is built on hydraulic pressure.
Praying for your recovery. We miss you.
What happened to her?
Nope. We don't need any more pseudo science on yt.
@@varun2250She has been suffering from effects from long covid, similar symptoms to chronic fatigue syndrome.
What ha happened to the creator, and if anything how is she uploading videos(I'm new in here so just curious)
@@varun2250 Dianna Cowern aka Physics Girl contracted COVID and has experienced symptoms known collectively as long COVID which include extreme mental and physical fatigue. Her husband has helped continue to manage things including her UA-cam videos online.
I am praying for your full recovery @physicsgirl 😇🙏❤. Thank you for your videos and your great energy.
Hoping that you are regaining your strength and energy, and recovering from your awful Long Covid, we're all rooting for you Diana ❤
Get well soon Diana, wishing you our best for your health and recovery. ❤️🩹 We’re thankful for your inspiration and your warm, bright energy. Stay strong 💪 you can do it!
This chick still got COVID?
Explain? Please?
@@florian_thrashthere is a video on this channel, she had/has the long COVID, it's/it was really terrible
@@florian_thrashshe's in a coma if I remember correctly. Her best friend posted a video on this channel a few months ago explaining the situation.
@@intensecutnso she’s a vegetable??
this phenomenon is called water hammer, and is actually a pretty big problem in modern plumbing with some very interesting solutions.
Water hammer is from flowing water, this is simply cavitation, is it not?
It's a problem from water stopping quickly.@@Cataclysm1
@Curly_Fry.d haha, true! It’s all related for sure, but this to me is more like cavitation in a pump or propeller, vs piping system water hammer. Regardless, it’s all cool stuff.
Could it have something to do with the bottle neck, and increased velocity?!@Curly_Fry.d
Actually, nope. Cavitation and water hammer are very different phenomenon. Cavitation happens bc bubbles go from high pressure to low pressure zone and literally explode; watter hammer is bc the inertia of water moving inside a pipe and suddenly closing the valves, making water hit the components of the system.
In the case it might seem the inertia of water provokes cavitation, but water is static, it is the bottle what is moving, water didn't press on the bottle.
I actually accidentally did this with a jar of spaghetti sauce in the grocery store, I was so damn embarrassed.
Keep going Diana! Every time we watch, we are rooting for you and sending healing energy to you!!
Healing energy? Is that in joules or newtons?
I’m not
Healing energy. Slightly more useful than thoughts and prayers. That is to say, useless beyond belief.
Is Diana the video poster? Does her illness make her crow like a wookie? I wasn't sure what was wrong with her when she was smacking the bottle with the hammer. R.I.P.
So basically, you're mimicking a mantis shrimp.
This comment scares me because I don’t know what it means
@@chemijaymantis shrimp punch so hard the punch goes as fast as a bullet. But the real damage is the impact bubble they leave behind that gets to 8500 degrees Fahrenheit. Also they have 16 color receptors, they can see in Uv visible and polarized light.
@@chemijaythey completely destroy most things unlucky enough to be on their hit list
@@Milkmarie333Just like me!! 🦐🥊
@@Milkmarie333wudahell is fahrenheit
Hang in there, Dianna. We are all pulling for you to get well. We know you can do it!
I like many would love to know that Diana is doing better and on her way back to health, We miss her.
Your energy is contagious.
Bro forgot to change the pfp to a thot
It's nice to see her healthy and happy from time to time.
Why, what's she normally like?
@Rlmorrison74 She has severe post-covid syndrome/Long covid. Videos can be found on their channel.
@@Rlmorrison74she’s been very sick for 2-3 years now.
They need to make school more interesting using this type of videos and explanations
they need to start teaching them how to think
@@edwardmulder3777starts with teaching the teachers how to think aswell
@@edwardmulder3777 I'd be happy if they just stopped punishing thinking
School system over all is broken, it's a system to mass brainwash children turning them into factory workers and they haven't changed since.
I didn’t need these videos growing up and my parents didn’t need them either.
I’m don’t pay attention to science and my science bs meter went off.
I love that they're running some of her older shows I'm hoping and sending positive energy to her that she recovers from her covid long disease I love physics girl and the image that she provides as a mentor to two young girls and women❤❤❤
The phenomenon is called Hydraulic Shock or more commonly referred to as Water Hammer and the mathematical equation for it is Δp=cdΔv; where Δp is the change in pressure [lb/ft2 (kg/m2)]; c is the velocity of pressure wave traveling back toward the water sources [ft/sec (m/sec)]; d is the mass density of water [1.9 slugs/ft3 (979.2 kg/m3)]; and Δv is the change in water velocity [ft/sec (m/sec)].
Also "hydrodynamic ram" if you're looking at bullets hitting fuel tanks. :-)
Yes, you are correct. The phenomenon you're referring to is indeed known as water hammer, or hydraulic shock. Water hammer occurs in a fluid (like water) when there is a sudden change in the flow rate, leading to a rapid change in pressure.
The equation you provided, Δp = cdΔv, is a simplified form of the water hammer equation and is commonly used to estimate the change in pressure caused by water hammer. Here's a breakdown of the variables in the equation:
Δp: Change in pressure (resulting from water hammer)
c: Velocity of the pressure wave traveling back toward the water source
d: Mass density of water
Δv: Change in water velocity
This equation helps in understanding and predicting the effects of water hammer in a fluid system. Water hammer can occur in pipelines, plumbing systems, and other fluid transport systems when there are sudden changes in flow, such as the closing of a valve or the abrupt stopping of flowing water. Managing water hammer is important to prevent damage to pipes and equipment in these systems.
You can’t add shapes into math!!! It was hard enough when they added letters😂
Damn dude... You hitting on Diana with all those formulas?
That's very hot of you
Praying for your recovery!
She isnt gonna make it...
@@rutabega306what happened?
@@rutabega306how would you know?
@@PIOVRAMEidk but that sure is más pessimitic
@@rutabega306wtf is wrong with you?
this timing is hilarious! I was explaining this to someone, and they didn’t believe me on how it worked. Sending them the link now 🤣
Hope Dianna is doing better, hoping for a speedy recovery ❤
RIP
@@gelbsucht5017wtf, she's alive
What happened to her?
@@adnyatlong COVID, she isn't able to do anything.
@@schnibie1991 Oh.. I hope for her speedy recovery and hope she can resume her work soon.
Love Dianna's videos. Continuing to pray for her total recovery.
What happened to her?!
RIP 😢
@@gamercat4659she is still recovering. Stop your rips.
@gamercat4659 she didn't die. 😢
@@Jake-uw6bh she's suffering from complications of long COVID (myalgic encephalomyelitis/chronic fatigue syndrome).
Mythbusters showed this when they were still running. Crazy stuff.
So did Mark rober and the backyard scientist
We love you physics Girl!!! Waiting patiently for you to come back, if you ever feel better ❤❤❤.
Wishing you a speedy recovery and all the best to your family
What ha happened to the creator, and if anything how is she uploading videos(I'm new in here so just curious)
Yeah bumping
We miss you physics girl. I hope you're feeling better.
She just refuses to admit the clot shots injured her. Smart, yet delusional.
@@Mike-es2ygkeep your bigoted opinion to yourself, mate
@@Novakid191 lol, "bigoted"? 😆 Against WHO?
@@Mike-es2yg can i know what you're talking about ?
@@Mike-es2yg I got your address, hope you are not super fond of your job
When we do this party trick we're just doing our best mantis shrimp impersonation
was just thinking about Diana the other day. Really hoping she's recovering. It's been so heartbreaking to see something so insidious happen to someone so full of joy and wonder.
I love seeing things from you! Always so well produced and well explained! I hope you keep getting stronger! We're all rooting for you!
Youre in my prayers Dianna. Get well soon.
What if she doesn't recover ? You didn't pray enough ?
@@fug_momo3729what's wrong with you
@@fug_momo3729as if a christian would ever admit their prayers are fruitless
@@fug_momo3729put the fedora down sir
@@fug_momo3729 what a mean spirited thing to say. Like, there's just no reason to be so spiteful.
Wishing you all good things Diana.
Diana, your team took this idea/explanation/understanding (in the fashion you've explained - not the phenomenon as a whole, or the casual/typical explanation), from another major youtuber. Not the 'youtuber' described in the video that sent your B.S meter off, but another science-oriented channel like yourself (vsauce, Veritasium, plenty more). I'd prefer to learn new concepts when seeing your videos.
I miss Diana so much... Sending all the love for you to get better ❤
is she dead...
@@turnleft8645No, but she has COVID-induced ME/CFS for almost a year now. So she's bedridden and can barely move, or think or talk. It's a horrible disease where even the slightest stimuli can collapse the body for weeks or even months :(
@@orenshved3116 OMG that is horrible
I don't know why this video has suddenly come up but I really miss Diana's videos. I really hope she makes a full recovery.
What happened to her!?! 😢
@@DadaIorianI think cancer
@@DadaIorianshe’s had severe long covid for years and has been slowly improving but it still barely functioning and is bedridden
A science UA-camr got COVID. This is how her body shut down.
@ElvenJustice can you not see the comments
Aww. It’s so nice to see Diana on my feed. Sending her healing energy 💕
What happened to her??
@@timmzie2362She has Long Covid, which can debilitate those afflicted with it for years. She’s had it for a little over 2 years now, and I sincerely hope she can start living life to the fullest again soon
@@thericedealer that's terrible, prey for the best.
@@timmzie2362vaqsheen injured
Lol you literally explained what he said but with extra steps to make it sound different 😂
Hope you're doing better, I pop in every other week or so to check for updates on your wellbeing.
Praying for you.
what happen to her
@@tink6225she is having long term issues from COVID. It's pretty much given her chronic fatigue that's made her unable to do anything. Her husband has been her caregiver since she got sick.
@@tink6225 -vaccine- gene therapy injury
@@tink6225COVID I think
She has a severe case of long Covid-19 . She hasn’t recovered from it yet.
So Awesome!
I hope your getting better 🫶🏻
“Science Rules!”
- Some scientist guy I use to watch in middle school
Bill Nye the Science Guy?
@@javascriptsophie4958during the intro a different voice says science rules and bill Nye mouths it so yes indeed
R/whoosh
Did he happen to sell meth
@@DOOMSLAYA99 has a lab in his basement he's afraid the FBI might find.
That makes more sense. I was immediately skeptical about the purported explanation - yeah, there could be a pretty small pressure wave in the compressible air inside the bottle, but it would not transfer much energy or momentum to the heavier incompressible liquid. Thanks for the real explanation.
Rooting for you girl. Get well soon!
@@AngelSilva-qn9whwe don’t care
@@AngelSilva-qn9whhard to say your life is worth the oxygen with a comment like that
What happened to her?
@@nickmargaglio8425she caught ligma
@@nickmargaglio8425 complications with her health from a battle with covid
Praying for your total recovery!🙏
Me/Cfs is not curable. She will never fully recover but may have periods where she feels better
My sister made a full recovery through acupuncture
Why? What happened to her?
@@Freddiefreds you can cure it with amphetamines bro
@leoolaniyan7062 Long covid, I heard. She's bedridden 😢😢😢😢😢😢
Glad someone is posting for you!
Get well soon, Diana!❤
I imagine that most of the time this doesn't work as planned and you just end up smashing the bottleneck off
First of all, I hope you feel well.
Cavitation is the same reason centrifugal pump, impellers are destroyed by restricted suction, causing the same affect.
Also how ultrasonic cleaners work. To test if they are working, often a sheet of aluminum foil is dropped in and if working, thousands of micro holes are formed through it.
A little cavitation never hurt anybody 😂 (sarcasm, yes it is very bad)
The little pistol shimp uses it to have the power of a 22 caliber gun to crack open shells and defend itself. Very cool.
@robbyelkin1433 But a medium amount can be a very bad day. Now that hurts!
normally when the flow of the fluid gets to high/the narrowpass is to small.
This is a great description of what happens
Get well soon diana
Mark rober already did this
Cheers bruv
Literally explained what that guy in the video said
Glad your legacy (incomplete, and prematurely **paused**) lives on and you’re still teaching us and sharing your love of physics.
Hope you and your team/family are seeing tiny improvements every day.
We miss you.
I hope you're feeling better Diana!
Btw, that’s how torpedoes works against battleships, they create an area in which there is not water in anymore just for the water to collapse rapidly on the enemy ship’s hull to create a crack in it.
How do they create this not water anymore? And no shade at all I know what you mean (just learnt that is cavitisation? Or something?)
@@Plutonium.2 basically, the sudden change of pressure and temperature makes the water go from liquid to gas, and back the other way around as the change is quickly cancelled by the surrounding water that is making the vapor unable to escape so it turns back to water, collapsing insanely quickly on the hull of the ship, cracking it
@@VolTool141 cool
Ding ding ding, as i recall, that guy explained that too
Hope you’re doing well, we miss you. Every time I hear about long covid I think “I hope Diana’s doing okay”. No matter how long it takes you to recover we’ll be here. You got this!
mRNA vaccine side-effects:
@@Valchrist1313imagine being alive for side effects (that aren't even real 😂), couldn't be anti vaxxers
@@jomama7210>everyone I disagree with is anti vaxxer even though death rates are up 3x what they were for minors in the EU from 2018 vs 2023
@@jomama7210 Now i don't know all the particulars of what is true and what is not. But the mRNA vaccine got alot of people talking who used to trust vaccines. I wouldn't conflate antivaxxers with people who talk about mRNA vaccines
@@jomama7210 Exactly. It's the only medicine that's 100% safe and effective.
Get well soon you are such an inspiration
Except her science BS meter is broken and even tho they filmed it, she is wrong. Why did it take here multiple hits with the robber mallet to make the bottle brake?
@@theamericanopry But she's not wrong. The bottle breaks exactly how she explains it. By cavitation bubbles. Multiple groups have covered this. I think even mythbusters have done it too.
@@theamericanopryVery likely she didn't hit it hard enough or had a poor angle, which would change the size of the low-pressure area, and prevent enough cavitation bubbles from forming and transferring enough force
@@justinmcgough3958 I used a bottle on another bottle. So...
@@justinmcgough3958but she said her “bs meter” was going off and then she explained exactly what the original guy said just more in depth. And then took all credit for the explanation while simultaneously discrediting the original guys video when all she did was explain quite literally the exact same thing.