Fluorescent Tube Sucks Up Water (Short Version)
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- Опубліковано 15 лип 2021
- How much Vacuum is there in a Fluorescent Tube?
As requested a short version of the interesting experiment.
This video is free to use on external websites and for educational uses. - Наука та технологія
As requested a short version of the video for free sharing on external websites and channels and for education. Apologies if you have seen it, I'm still working out what "shorts" is.
At least I now know how to comment first! Much respect to you all.
Glad your back!
Ok
To make a "shorts" video, add "#shorts" to your video title or description.
“Shorts” is a type of pants worn by some people on hot days. Not to be confused with “shirts”. According to a certain yellow cartoon character, shorts are also edible.
YT 'shorts' are upto 60s vids in Square or Vertical resolutions (e.g. from phones). It's YT's version of Instagram/TikTok videos.
I never would've guessed that the column of water would go that high up. Cool demonstration.
Would go up to about 35ish feet if he had a tube long enough.
This column of water actually weights 0.23 atm so the pressure in the air pocket is 0.77 and so there is 1/4 less air really in it than it seems to be.
It would fill up even more if the water was degassed first.
@@chemistryofquestionablequa6252but even then wouldn’t the gas slightly boil into a gas state and remain a vapor along with the minimal gas that’s in there?
Edit: because of it being under a slight vacuum
This man + beer + huge transformers = awesomeness
@@razertheslayer3082 Not yet and if you know what you are doing, mind you, it just takes one small mistake. Maybe he will film it for us :-))
There may be even less gas than is visible, the weight of the water in the tube will maintain a lower than atmosphere pressure in the top part of the tube.
Very cool
The water also releases some of the gas that's dissolved in it, and will partially boil away due to the low pressure, further adding to the gas in the tube. You can see this very well with the 8ft tube - you can see a lot of bubbling and foaming near the top of the water as it's being pulled in.
Learned this trick in chemistry class 60+ years ago! Way to demonstrate vacuum and residual gases Photon! Great videos, thank you and keep em coming!!
probably most of the gas there is dissolved air from the water outgassing in the low pressure environment
Yes, you can clearly see the frothing as it travel up the tube. I would love to see this done again with degassed water.
How much of that bubbling is outgassing, and how much is due to the water boiling into the vacuum?
@@StephanAhonen much of it is water boiling, that's for sure.
@Peter Rabbit it would mostly condense when the pressure equalized, so i doubt it, but given the weight of the water column it is t as much gas as it looks like
I watched it yesterday, but its so good Ill watch it again!
Me too
And me :)
Right,a I never knew this would happen.
Me also : )
That was one of the most satisfying demonstrations I have ever seen.
Now these are the kind of 'shorts' I can get behind!
I usually try to watch your entire video, but sometimes I just don't have the time and then it disappears from my feed as other people are posting... so having a shorter option makes it possible for me to quickly see the gist of it.
As to the tubes, I'd have probably shattered the tube with the dyed water inside and turned most of my wall, floor, and door a murky grey color!
WTH, Shouldn't you be making Raspberry Pi videos for us?
@@stevensexton5801 lol, working on a Starlink video right now. Photonicinduction is how I procrastinate!
The irony of leaving such a long comment to say how you appreciate short vids is strong. ;)
re: exploding tubes, so this is redshirt jeff commenting right now
No time for a full photonicinduction video but you can type this whole comment ?
k champ
A fascinating video.
My brother worked for Thorn lighting when they went belly up, he used his redundancy to go back to school going from a fitter and turner to a PhD engineer. That first bulb must have been at least 30 years old.
Thorn lighting is a blast to the past for me Mark. I’m from Leicester and they had a big factory on Melton Road. They used to make bulbs there and their Xmas decorations were awesome. It’s a Sainsbury’s now unfortunately.
Anyone know how to turn on CC Captions thingy?
I believe it's set to on by default, however, sometimes takes a while to process.
Tap the screen and you should see a little cc in a box tap it. Tap the video screen part.
No wonder they implode so good when they get bumped I never knew the vacuum was so much I will handle them with more care now.
This is an amazing experiment... very very clever!
Just shows you how people who suck can go so far
For even shorter attention span viewers I’d recommend a ”shorts” type of video which is below one minute in length. Those videos gobble up tens of millions of views
I think this experiment is hard to put in a video of one minute only...
These stupid shorts are the cancer of youtube. I'm here to watch proper videos in horizontal format, if I want short vertical videos I'll go to TikTok.
A few years ago they were pushing long videos by giving you more ads which killed a whole genere of content (animations with short videos) and now they promote this shit.
@@debug_duck exactly. This platform truly is the most corporate dick sucking garbage I have ever seen. Another thing that makes me angry is the way that searches are completed. The algorithm makes it so that if it's anything even slightly news related (detects keywords) you'll get nothing but shitty "news" channels. It's very hard to find conversation on modern topics coming from normal people unless you happen to get it recommended. They are shutting down anything that doesn't make money for some greedy corporation. The only thing that still works somewhat reliably is my recommend as everything seems to come through ok. Constant censorship and bias on this site and anything to do with Googles algorithm and AI, autopurging millions of comments every minute. Can't wait till we get a reliable platform for users to actually express themselves on and be able to reliably make money.
Screw those f-ing shorts.
I was so happy when PI came back because he really is representing the idea of the old youtube when it was good.
Don’t ruin it with shorts for dipshits with short attention span.
Give us longs instead with 1h+ material
They artificially gobble up tens of millions of views because they are being pushed by UA-cam so they can compete with other platforms.
If I wanted shorts, stories, moments, or whatever garbage they're pushing this week then I wouldn't be on UA-cam.
Wow! I wasn't expecting that much water to be drawn
You’re a legend for keeping those Florry tubes Andy!
I threw so many of them in the skip on various jobs when renovating pubs & clubs in the 90’s…
The drawing you showed remind me of my Pt ii written exam where one of the questions was to draw a wiring diagram of a ballasted Florescent lighting circuit
I proudly got a distinction
I tried something similar once.... Snapped the end off a 4 foot tube whilst that end was submerged.... Water rushed up the tube so quick and violently it water hammered at the opposite end of the tube and shattered it in my hand.
So glad you are back! I can't tell you how often I practically pissed myself laughing. I really like the new format too. Keep making the world a better place!!
I love how you use these 'extreme' experiments to show how stuff works, showing my friends some of your videos gave them a better understanding of electricity while laughing our asses off 👍
Mate, you were brave filming that 8' tube indoors! I was getting anxiety watching it, waiting for it to break from the weight of the water inside and cover your lovely white walls and doors with black dye xD Awesome video though, didn't expect that to work as well as it did!
I was thinking that as well. Some of his indoor experiments do have some unexpected mishaps.
A great video demo Photonicinduction! I make discharge tubes as a hobby and for a cold cathode fluorescent tube the pressure inside is about 20 millibars. Whether it is different for a fluorescent tube with heated cathodes I'm not sure but it looks about that judging by the result of your excellent experiment.
I'm curious to see what's on the sign above the door. Something about Safety and 'Photonicinduction' I bet.
Love it, great demonstration as always.
Who'd have thought a vacuum tube could sound like a toilet reservoir.. ;-)
Actually very resource efficient more than I originally thought
Great video, really enjoyed it! Thank you Andy!
I would not have thought even a fraction of such a vacuum existed within a fluorescent tube!
It's like some mad abstract toilet cistern filling up!
Great video as always!
Thomas Savery would be proud.
Damn, it's good to have you back.
Thanks for your effort
I was bench watching your channel yesterday! I’m clad I discovered your channel! You earned my subscription
Would love to see them drain. That was a really cool experiment, I definitely did not expect a vacuum that strong.
Photon man I can't tell you how awesome it is to see you back bro, I love your content, keep making these awesome informative videos brother 👍🏻
Wouldn't have bet the water would go that high. Good show.
A mate of mine smashed the end off one of these in a swimming pool (just didn't seem stupid at the time!) The water rushed in so fast it slid through his hand and stabbed him in the guts, off to hospital, luckily it wasn't too bad and it's healed pretty well.
Awesome sir. Thank you for posting.
PERFECT, thanks! I was going to send the original video to someone who would mostly be interested in this part but didn't, because the "clips" feature of YT is shite and I don't like telling people to skip to certain times. This is perfect, man.
Hooking it up to a vacuum gauge is a lot more analytical. That said you can still calculate roughly how deep of a vacuum it is with math. Via how high the water went up etc
Enjoyed this. It reminds me of one of Thunderf00ts experiments.
this is the longest shorts video i've ever seen. love it.
I’ll watch the science 🧪 again Andy 🙂
Perfectly reduced to only the essence of fluorescent lights!! 👏🏻👏🏻👏🏻👏🏻
I watched it again too, it was so interesting! I'm also re-watching every other Photonicinduction video :)
Popular pressure for plasma is around 1mBar (1/1000 atmosphere) see 'The Paschen Curve'. Keep up the good work. -Mark, NZ
brilliant experiment
That's good science right there! I'd like to see mercury extractions one day sir.. I was running a service call at this little old ladies house a while back here in Texas and she said she had dropped a fluorescent tube. She had called a hazmat company and the quarantined her house for a cleanup and charged her like 3000.00 dollars. I know she got ripped off but was curious if it's even really dangerous.. I see our wrestlers breaking them on each other all the time...
Keep em coming!
Just started to think on that long tube, there's actually so strong vacuum inside of that tube that while it is sucking the water up, at least some of the water is boiling, that may cause larger air pocket in the end.
Love it 💚 such a cool and informative quick vid!
I never knew they would have a suction in them like that‼️
The more you know aye, 🙃👌
Gotta love the short version!
LOOK AT ALL THAT WATER!!! :D
Any time one of these breaks I always think, the world just got a little bit smaller
so every time they produce one the world gets bigger!
I was quite satisfied watching the Longer video
Always luv your channel content 👊👊
The slowmo guys need to copy this. I bet the water is boiling under that vacuum!?
Hope they can reunite again soon
@@FSXgta didn't know they broke up
quick thing to note, water is heavy and gravity is a thing, so in the tube after the water is pulled up, if you left it sit against the wall it will pull a new vacuum, though less strong than the first. you can use this with even heavier things like mercury to make vacuum pumps and cody's lab made one of those like 6 or 7 years ago if you dig up his old, old videos.
Beautiful video. Love it... :)
Nice one, cheers!
THIS is how shorts SHOULD be done, full screen, not that narrow aspect ratio crap.
I don't think UA-cam considers it a "short" UNLESS it's vertical, and is under one minute long. It's designed for people on phones with short attention spans. And according they get huge numbers of views.
Great stuff!
Wow. Great video.
it's a wonder how these don't implode as nearly all the air is pulled out !
It makes me wonder of the Vacuum of a large old TV CRT, no wonder they implode violently when struck on the face of the tube. I do remember an old electronics teacher breaking the little nipple at the back and letting the vacuum go, then it was much more safe to handle. But he did have long gloves and face shield on while all the class was on the other side thinking the worst.
I have a bunch of dead T10 bulbs and shattered one by mistake.. however, I know so much more about them thanks to you! Even saw the igniter coil.
Keep that classic Photon intro going mate !
“A little bit of dye in there”
not only there is water vapor in there, but the hidrostatic pressure of the water keeps a lower pressure at the top. It is even more impressive than that!!
Fascinating! You need to pop more things though 😂
3:20 is the water boling because of the high vacuum, when its rush up the pipe?
Hmmm, would say yes, but bubbles seem to be forming quite far from the top of the water so I don't know- the weight of the water means it can't boil further than about 30cm from the top
Might be dissolved gases? Should be about 3% of the height of the tube
Wow amazed the pressure is that low given how ridiculously thin the glass is. Less than 1mm. I often thought with 8ft tubes that they are not far of breaking with their own weight.
Damn 2 vids in less than 24hrs? I know it's part of the video from yesterday but still a treat!
You should do some of them shorts clips, people love the science ones. I think your educational clips will do well.
You used to see the phosphor blown off the end of T12 tubes when they had reached end-of-life on SRS gear. After the cathode loses emission a lead-in wire would glow and melt back through the glass-to-metal seal and let the air in suddenly!
It's not the vacuum pulling the water up the tube, it's air pressure pushing the water up the tube.
My O-level Physics teacher would be proud of me :-)
That's such a petty distinction though.
We are always under pressure on Earth, so a 'vacuum' is always a suction to us despite it being the default state of space because we as humans are of the Earth.
Not that I'm calling you petty, I just find a lot of science teachers specifically to be really petty about that kind of thing.
@@lemmingscanfly5 "petty" or not, it's a fact. And, in science, small distinctions can sometimes be very important.
Great video
This has to be the coolest thing I’ve ever seen (besides your overclocked record player)
I could listen to your accent all day !
Давно ждали твоего возвращения!
Yeah, That is quite possibly the hardest vacuum that anyone can handle without specific training on the dangers of it.
Except the difference in pressure between the inside and outside is probably about 100kPa. Making the internal pressure 10x smaller would increase that difference by maybe 1.2 kpa or something. Not a huge difference.
The reason these are considered safe (except for the mercury) is because the volume of vacuum inside is kinda small, and spread throughout the long glass tube. If you had a similar "hard" vacuum in a glass tank the size of a big beach ball, that would be way more dangerous.
Never thought about it.
wow. i did not expect that suckage. awesome.
that height of water column is making it look like there was more gas inside the longer tube, but i do understand it would make it difficult to show it in any other way.
I think it is pulling harder because the water weighs a lot in that tube plus there is likely steam or water vapor from the vacuum boiling the water at least initially. So there's no more gas in that tube than the shorter one.
Amazing video as always... Didn't knew about 8ft tubes. 4ft is max I have seen.
That's a lot of dye, man. Way too much. :D
I did these experiments as a youngster, it was always fun to see (and hear) was being pushed inside.
Super charged electric kettle. They drive me crazy waiting. . .
Im from komi republic of Russia, i glad to see u can public videos,its amazing
So about 1000 Pa left. Still quite a ways from the 10 Pa of a 2-stage vacuum pump. I'd try using LN2 to collect the mercury out of those and make a Sprengle pump with it and some glass tubes (.001 Pa, and far cheaper than a turbo pump to get that same vacuum level, even if it is slower and takes a week per cubic foot).
Seeing the 8ft tube the first time round reminded me that there are people who make "bottle" rockets with fluoro tubes, appropriately dressed up as rockets with fins and a nosecone, owing to them being strong enough to take pressurisation with air and water inside, aswell as being slender and light enough to take flight, some can reach some insane altitudes too for what is only water pushed out by pressurised air... :D
Fascinating
Where did you get an 8 foot tube from ? Didn't even know they existed. Only seen them up to 6 feet long.
Interesting experiment, will give that a go myself too. Keep those video's coming.
It was nice to watch this version after seeing the long version first.
Long version: Tell me all the bits!
Short version: Show me just the bits!
I have a big smile as soon as i hear the intro music, in anticipation what might come ☺😊
This is incredible
Thx
Amazing!!
Watched the long version and also the short version :)
Amazing to watch..
The legend is back
You notice that the weight of the water actually filled some of that vacuum with water vapour on the 8ft tube. I think there is a physical limit to how far you can suck water up a tube and i think it's about 10 meters.
Would the tube snap under the weight of all that water if you were to lift it from one end?
This is an excellent example how strong glass really is
very cool never would have guessed that high of a vac