How to film the inside of a microwave (2 ways)
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- Опубліковано 29 лис 2018
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Filming what's going on on the inside of a microwave is tricky. Here are two ways you can do it. Also, a really easy way to make a plasma in a microwave!
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Buy nerdy maths things: mathsgear.co.uk - Наука та технологія
I do live microwave filming as part of a stage show with Festival Of The Spoken Nerd. Our latest show is available on DVD, HD download and floppy disk: fotsn.com/ycpandvd
You can't polish a Nerd!
Luckily The video on codys lab is still up or had been put up again
ua-cam.com/video/KTdjHMWD_t8/v-deo.html
Did the math... thats around 42kg worth of floppy disks.
you don't need expensive carbon fibre tissue... with a match and some fibre of iron wool to self ignite the matches head in the closed running microwave, this will light the match and than the flame will boost to a bigger plasma cuz flames are plasma too... you will get a dense plasme ball, don't use a beaker, uae some thing like the beaker but with thiker walls because otherwise it will melt thruogh the beaker and the microwave ofen should be a robust one, because the dense plasmaball will over load it substantially
@@JoseAlbarracin10 You might not be able to polish a nerd, but Steve's new haircut smartens him up a lot.
- fixable?
(image of broken glass)
- *Oh*
Easily. All it takes is... erm... uhhh... a time... machine...?
Yeah, dude... We all saw the video.
Honestly the screenshot of the chat is all I want in a relationship or in life in general
Agreed
I feel you
what?!
True
I am 100% with you on that. My ex-wife didn't appreciate my curiosity, unfortunately. 😔
A note about using mesh screen vs. a perforated metal sheet as an attenuator: The woven nature of wire mesh results in what is effectively, a tiny resistor at each intersection of the wire mesh due to very small contact areas, and oxides on the surface of the wires. This results in ohmic heating and thus the hot spot as noted. Perforated metal doesn't have this problem.
Sir, you have more than 1M subscribers. You have decent income to buy microwaves everyday.
How did you end up with a nasty piece of work (your wife) that dares to blame you over a cheap microwave?
Is she a billionare? Or are you allowing her to abuse you because of sexist (antimen) laws regarding mariagee.
Check out An Ear For Men channel. I would save you (not her) if we run into the aftermath of World War III. You will save modern science. She can blame Men and have bedtime with you once in a while. She Just doesn't worth you. She should be modest and loving. Not bitching over a cheap microwave.
Turns out that my remade video is available; at least for the time being.
Cody'sLab can you send me some mercury
All my favourite youtubers are bunching up... nice.
i remember cody when saw this video title, and he is here!
I've seen tons of your videos but I can't remember this one. Can you (or anyone else) please tell me what that one was?
Link?
This is the best explanation of a camera aperture I have ever seen!
I had so many classes about this in school but never truly understood it. This really blew my mind.
Yeah I only just realised I didn't know/fully understand this. And now I do. From just a couple of minutes in a video which I thought only gonna be about a completely different topic :)
Your wife's a champ. Love the "Oh." as a reaction to the shattered glass. :D At least you now have a separate microwave oven for experiments! ... At least I hope you got a new one for Lianne.
I've built a digital camera but still had my mind blown with the aperture method. So cool!
You built a DSLR? How?
@@kutsen39 with his hands
Steve Mould, Nile red and Codyslab. 3 of the best channels on youtube
Don't forget Mark Rober, Big Clive, Smarter Every Day and Tom Scott.
@@maxximumb And This Old Tony, AvE and Scott Manley
@@maxximumb also don't forget brady haran's many channels, other people in the math and physics side (vsauce (and related), physics girl, 3b1b) and primitive technology
Also Captain Disillusion, ElectroBOOM, and Technology Connections :)
The Thought Emporium, Styropyro anyone?
What a fascinating way to explain how aperture works.. anyone who makes video should watch this.
A reason why i dont Like this comment : 69 likes
2:55 everything seems normal
3:00 wait a second... Did he lose hair during the process of making the video?
4:08 his hair reappeared...?
4:00 ahhhh nvm...
Either he is dome type of alien or he is aging forwards and back very fast
Radiation ☢️ 😂
2:49 that final "oh" it's poetry ahahah Lianne is an angel
I've found that physicists are very good at explaining how exactly things did go wrong, with no ability to predict them beforehand
I have to say this is one of the best educational UA-cam videos I've ever seen! (and I've seen a lot!) You touch on so many different topics, all of which are combined by a really cool theme, and the presentation of your explanations - the wording, the graphics, the humour, etc. - is sublime!
Hey thanks! That really means a lot.
I studied photography, but you still managed to give me an a-ha moment when you said 'it's more like a pinhole camera' when you closed down the aperture down. I've never heard that simple explanation before!
11:25 "Ohhhhhhhhhhhhhh...." I thought that when you explained why cameras narrow the aperture! Loved the video, really fun to watch and interesting as always!
2:55 instant haircut :)
To and fro buddy, to and fro.
@@NiaziMujahidKhan and 9:30
@@theinconsistentpark9060 And 4:16 and 5:25 😁😁😁
He grows his hair in the first 20 seconds
@@micoromico He's killing it!
I don't know how I got pointed to your channel but I like it a lot. I love how you don't dumb things down and explain it step by step.
NileRed mentioned in a Steve Mould video??? Woah
I just came here from the NileRed video he mentioned, in which Steve was mentioned 😆
He is the only one capable of cutting and uncutting his hair in the same video..... a true god of science
2:58 before shaving
2:59 after shaving
Thats the effect of Microwave
it turn you into Time Machine
Going to say “Wave dynamics!” whenever I need a haircut and a shave.
Steve Mould, you are freaking awesome.
Agree 100^4%
The continuity on this vid hurts my brain 😂 good work as always though 👍
WOOOOAAAAAHHH thank you so much, I knew that making the aperture smaller expands the plane of focus but I didn’t know how or why, and I never bothered to look it up, but you explained it so concisely and intuitively and now I see exactly why, awesome!!
Steve, I could watch you for hours! Love your style and explaining method! Keep the videos comin'!
7:11 this whole segment about the pin-hole projector and the camera lens was beautiful.
Stumbled upon your channel. Glad I found it. You’re a good teacher. Your method is very fluid. Good job. Subscribed.
I love the pinhole camera, in my room in the morning I can see outside without opening my curtains, theyre sun blocking (makes your room dark) so it basically mimics the box and pinhole idea
The face you're pulling when you freeze for the warning made me actually lol in real life. I love a good half-eye pic.
thanks for the awesome explanation of aperture! I knew what it was used for, but now I know why it works and will be able to remember it a lot better.
I never thought I'd learn so much about cameras when I started this video. Very intuitive explanations.
There is a math trick worth trying to get better pictures through the mesh : fast Fourier transformations.
I used the field of view/aperture trick a lot for taking pictures of animals thought a wire mesh in zoo, and although those mesh are a lot bigger you can have decent results.
Seems like a DSLR with a wide aperture performs good enough for HD videos, but there might be a way get good results with less performant hardware.
Recently while scanning a lot of old family photography, some of them where on a textured paper and needed to find a way to get rid of that pattern. That's when I discovered the marvels of fast Fourier transformations.
I wonder how an FFT filter could improve a picture/film made through a mesh, but I believe it could be incredible.
excellent, was waiting to find out how you did it. I suspected the pinhole trick, but never thought about the precision focus - so simple, it's great.
I super appreciate that you show things going wrong / breaking, as well as it working! It's affirming and informative to know that stuff breaks when you make and record these cool phenomena. :)
@Steve I enjoy the way you edit your videos almost as much as the content.
Thanks!
After more years I'd like to admit of photography i finally understand basics of optics.
That "oh" was priceless 🤣😂🤣😂🤣
I'm a prototype engineer/machinist for the Uni of Sydney and made a solution for this problem for one of the researchers. Basically we used a tuned length and diameter tube port into the microwave that allows physical access in and out while it's running while attenuating all the microwaves :)
Who remembers the UA-cam channel, "Can I microwave this?" This video is far superior
Time Travel confirmed: Steve turns 8 years younger at 0:16 :O
and the older again at 2:58
Proving you can polish a nerd, even if the effects only have a short half life.
Of course, phone+microwave=time travel
@@scudlee Hououin Kyouma is BACK!!!!
I wonder when did he time travelled to steal Anthony Hopkins eyes
The secret techniques have been released to us plebeians.
If you watch the Slow mo CD in a microwave video and scroll down to TheScott10012's comment asking how it was done 1 year ago, you'll see I explained it. Just seemed nobody believed me. If I remember correctly I mentioned the method on other videos / comments too, but I'm far too lazy to go find them now.
Explanation for haircut change.
First universe: Long hair.
Second universe: Short hair.
This video is a glitch in multiverse.
What other proof do you need??
I'm glad you mentioned Cody's lab. I was thinking the exact same thing at the same time. By the way I found your Channel few days ago and have been watching most of your videos. Really like them
The trick with very open aperture and the micro oven grill at 8:50 is very useful at Zoos.
Very bright full frame telephoto lenses, more than 85 mm with large aperture, larger than f/2.8 can disappear the cages. The longer focal length and bigger aperture deliver better results. It is a trick of optics.
Beautiful plasma capture, well done!
I love your channel. These are amazing experiments!
I love the progression from complicated to simple. Classic research.
0:17 that's the fastest I've seen hair grow. Steve Mould hiding hair growth techniques from the general population.
It goes back short later on !!
And finally I understand how pinhole cameras work! Your explanation and graphic made it super simple and easy to understand. Thank you! Thank you!
thumbs up for slow mo guys research
I'm glad I stumbled across your channel mate, Great videos
The waves you describe as exponentially decaying over the mesh are called evanescent waves ;)
Tips hat
Isn't that a band
Just a note on the mesh.... It acts a collection of very small and very short waveguides... These waveguides do not support any modes at the microwave frequency of the oven and it will die out exponentially when it tries to pass through.... So basically what you have is a very large surface area High Pass filter that passes frequecies that is a few orders of magnitudes higher than that of the microwave... like visible light.... The reason why they dont make it to pass exactly at the microwave frequency is because the cavity where you put the food in acts as a resonant cavity for an oscillator (the magnetron being the active component). This resonator resonating frequency is a function of the cavity dimensions, but also the permitivity of the material inside of the cavity... Thus the frequency and deadspots and modes generated inside of this cavity is quite unpredictable to be exact, but will always fall inside of a range that is below the cutoff frequency of the mesh... :)
In years I knew about the depths of field but just didn’t bother understanding how it works , you’ve just explained it so brilliantly easy
Great video Steve, looking sharp!
your explanation of a camera obscura is perfect! it's a strange concept to try to put into words.
Metal is fine in the microwave. It’s not about metal, it’s about heat dissipation. If you put tin foil or a metal can in the microwave heat will build up in spots on the metal, make plasma, then arc. This is because of how thin the metal is and how quickly heat builds up in spots.
If you leave a thicker, rolled steel fork in your food no problem (not cast iron too many holes and voids). No it will not break your microwave. The magnetron puts a fixed amount of energy into the faraday cage. If that energy is absorbed better by a piece of metal the magnetron doesn’t get hotter it’s output stays the same.
Only 2 things will break your microwave.
1 putting something in the faraday cage that heats up to the point that it melts or breaks the faraday cage.
2 running the microwave empty, this causes all energy to build until the microwaves find imperfections in the faraday cage to escape through damaging the faraday cage.
The safety mechanisms in the microwave prevent it from running if the latches or faraday cage are broken, therefore broken microwave.
Always wondered what the science behind that mesh was, thanks!
0:42 Absolute perfect, there are no better words for what a human does with their life :)
"I dont think theres an intuitive way to explain it " This from the guy with a channel that has a bunch of better and simpler descriptions of complex physical phenomena lol, you can do it
wow! very high quality content! earned my immediate subscription
Oh I should have thought of that! That's what I do to take photos through a fence in a zoo or something.
finally, been waiting for this video for so long
dude I love your videos, keep on
Love your channel and Nilered!
Steve this could not have been timed better.
You uploaded this while we were watching the recording of you doing this live for FOTSN...!
Your video has peaked my interest. Subscribed!
I love your disclaimer in your British accent. Sounds more official than it would with my accent.
This was excellent video for camera light physics explanation :) Thanks :)
I waited soooo long for this episode!
The mesh isolation method is applied in many other situations, beside microwave ovens. E.g. radio telescopes (telescopes, that take images with radio waves and not with visible light) are also meshed for the sake of weight reduction and stability. The difference is that radio telescopes reflect the light instead of isolating it.
That was great fun! Glad I found your channel.
Been waiting for this.
This was really amazing!!
3:00 min into the video and... voilà!!! Magical hair cut happens!
Steve's hair hates continuity.
This video, revisiting it, gave me an interesting viola moment of how evanescent waves are related to diffraction which means how boundary conditions of Maxwell's equations are related to diffraction. Evanescent waves are the limit of the number of slits going to infinity and the size going to zero which is similar to the infinite series to represent a decaying exponential.
I'd say the easy way to explain wave unable to pass through the mesh, is like filtering water. the water that passes is way less. in the wave, most of the wave would end up hitting the metal mesh.
Amazing how much he changes looks during each cut
7:48 goddamnit you just summarised two whole chapter in my physics book when I was in 8th grade. Why were my physics teachers so bad??!
@4:06 that’s maths calculation must have taken an age with the amount of hair he grew
The hair continuity in this video is amazing :)
The hoodie and it's hood over his left shoulder is the only constant!
Just doing some rough calculations. Microwave ovens output between 600 W and ~1500 W depending on model. Radio frequency exposure limits vary around the world as to power density in millwatts per centimeter squared mW/cm^2 and as to exposure time. In the US, the general population limit is 1 mW/cm^2 averaged over a 30 minute period.
So, let's say you have a 1000 W oven. Converting 1000 W to mW gives you 1,000,000 mW. Assuming you have all the 1000 W of energy is bouncing around the inside of the oven and is available at the enlarged hole in the mesh for the camera (it's probably not, but figuring worst case), you would need to attenuate the RF energy by 1,000,000 times to reduce the 1,000,000 mW down to 1 mW. That is a factor of 10 to the 6th power or an attenuation of 60 dB. That is a factor of 100 more than the 10 to the 4th power you've estimated.
Since the hole is 1 cm in diameter, the area is 0.785 cm and the power density at the hole would be 1,000,000 mW x 10^-4 / 0.785 cm^2 = 127.3 mW/cm^2 using your estimate of a factor of 10 to the 4th power reduction from the 1 cm diameter hole.
As stated, the power levels drop off exponentially with distance from the hole and there is a time averaging function over the 30 minutes so if one is only running the microwave oven for a few seconds here and there over the 30 minute period, that helps.
All that said, would I try this if I had a spare microwave to play with, probably. But I'm a EE who works with radio waves and who has a spectrum analyzer and other test equipment to perform RF measurements to verify everything is safe. For the average person, as they say, your mileage may vary . . .
So a microwave can melt glass in 2 second but my hot pocket is still cold after 2 minutes
Amazing videography technique @2:58 : "The Haircut Cut"
I love your wacky experiments and also the little behind the scenes mentions of how your wife is just... "... um ok hun, I love you but... please don't burn down the house... "
Great video of plasma!
The thickness of the holes matter. You could have a large hole that attenuates a lot if you mounted a flange and metal pipe inside of a bigger hole. Great for filming or, if you use a couple, flowing reactants in and products out.
Is it true that the holes blocking the wave is due to diffraction? Is the drop in pwoer just because of the difraction or is there also interference involved? Can you give some more general details about this process?
I like your vibe, man !
Speaking of the mesh part of the microwave not allowing waves to pass through, is that the same as a pop filter on mics? They don't allow certain waves to come through? I've seen these pop filters be fabric to metal. I'm curious if that's similar.
Can you also introduce magnetic influences inside the microwave for your plasma videos? Such as controlling the spin of the plasma?
Great videos!
Being so nice to Cody after he threw that shade at you in the original video. Peace on earth and goodwill toward men.
I find disappearing a metal mesh with DSLR optics way more interesting than any boring plasma inside a microwave. Mind blowing.
Thanks, I can now film myself from inside a toaster whilst it’s in the bath.
I guess I see why the UA-cam algorithm recommended Nile Red to me now. I watched half of this video, then had to leave home and didn’t finish it. The next day, I saw a video by Nile Red on the home tab in the UA-cam app that looked interesting so I watched it and really liked his channel. Then I came back to finish this and for a second, I thought it was a huge coincidence, but then I realized that UA-cam probably noticed a high correlation between watching this video and watching his channel. Kind of interesting.
His hair changed out of no where, had to go back to make sure i wasnt high or sum 💀
lol same here
hahahah same
I had to check cos I'm high 😅
I have been waiting 2 years for this almost
0:17 #MarriageGoals
Also, I like how all the Tubers doing cool stuff seem to always wind up networked within their category of cool stuff.
"The reason waves cant fit through small holes is kind of tricky, i don't think there's an intuitive way it explain it" Here's one: If they're too big, they don't fit.