How Much Vacuum Is In a Fluorescent Bulb?
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- เผยแพร่เมื่อ 18 ก.ย. 2021
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In this video I show you how much vacuum there is in a fluorescent tube light bulb. I talk about how they work and why they need a low vacuum.
Photonicinduction video: • Fluorescent Tube Sucks...
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"You'll notice how the plasma globe no longer works after I broke it". I love this guy.
yeah xd
😪 he is just broke that
😛But for atleast some good purpose
@@vaisakhkm783 good english and great use of emojis...😴🤪💧🐸🐸
@@PPpeepi 😬
As he was describing that it wouldn't work because there was too much pressure, I thought, "OMG, he's gonna put it in the vacuum chamber!" and he did.
Photonicinduction is a legend
Yes
THE legend
Always cool to see a high-sub channel has interest in a grey-area channel I've watched for years. It's like finding out your professor is a stoner.
@@brownell10 let's see how many new subs this video will bring to his channel
So glad he’s back too
For some reason the random stick, dye mixing moment was so wholesome
Such a scientific channel lol
Weird.
i thought it looked stupid
Remember that there will still be a partial vacuum even after filling the tube with water due to the mass of the water in the tube above the level of the water in the reservoir. This will be more pronounced in the longer tube. You'd have to equalise the levels in the tube and reservoir to get a true indication.
I love the chosen to
True. It acts somewhat like a mercury pressure gauge.
Tube should be placed close to horizontal position
Atmospheric pressure in feet of water is 33.9ft. He would need to Brody it and get a bigger tube.
And there was likely air trapped in the upside down endcap void
Nice of you to give the channel Photonicinduction a shoutout because you got the idea to do it as well because of his video. Nice video! 💯
Photonicinduction is an absolute legend. Truly the best of British. 👍👍
So good you mentioned Photonicinduction at the beginning. I saw it a time ago on his channel. Great you mentioned you source, I really appreciate that. As always your video is great and at least it achieves a wide range due to your channel!
Dude, James, that was just rad. I love that you SHOW us scientific ideas, that’s what TH-cam was practically made for!
TH-cam was made for showing ads over content that platform received for free.
@@Cypeq it wasnt MADE for that. youtube originated as a simple platform for creators to post videos and interact with others. now its become the gross ad complex
@@spitgorge2021 Exactly. Now you have "creators" only here because of ads. Not all of course, but many suddenly appeared when Google decided to make youtube into advertisetube. Now you have to pay for no ads. Disgusting how something that was free (not paying to see ads) Now became paying for the same thing that was free.
@@ganjasage420 It does have, though, the benefit of some people being able to be full-time TH-camrs. But yeah, it really sucked to go from having something nice for free, then having to deal with the ads..
I would be so happy to hang out with this guy for a week.
Even an hour lol
stevo???
I'd even like meeting him just for 5 seconds🥲🥲
Defo but i dont think a week would be enough for me
Kinky
He really surprises me every time with different titles
I did not expect those results! Nice video.
Thank you! I did not expect that! Good job.
This was awesome! Thanks for sharing!
I watched lots of your videos but this one got me subscribed at once.
Great experiment !
One of your exceptional videos, well done
Awesome, fixed a thousand of those lights but never completely understood how they work 🤔 thank you for making me smarter
I love your videos! It's good to learn new things in a fun way!
Love these experiments. TY!
I really enjoy this guy’s videos. Very interesting topics, well done. Thank you.
The way this experiment has been conducted is really awesome.
I thought that too!!
Fascinating to see and get a really good lesson in exactly how fluorescent lights work!!
Love this channel.. Photonicinductions channel is also pretty damn epic
oh my goodness, I actually already had a mel science box preordered. I'm happy that they're sponsoring your video.
One of the coolest ones yet.
Finally! I have always wondered 🤔
How great this channel is...
RESPECT ❤️
The Action Lab in 2030: I've built a vacuum airship!
This video just hit different man. This one was beyond brilliant.
Actually the water should have filled even more. The weight of the water column itself is pulling it down somewhat and thus we see the gap above it much more than it should have been
Yes , Exactly
Atmospheric pressure is about 33.9ft of water, so he would need a tube at least that long for the weight of the water column to not be able to reach the end. He explained his losses properly as water vapor from the column of water boiling as it filled.
@@Sembazuru true..both the vapour pressure and weight of water column pulls it down and thus forming the gap at the top. Yes, vapour pressure of water is the major reason, but weight of the water column is not negligible either.
It's initially amazing that it's structurally solid despite being thin glass but it is only 1 atmosphere of pressure difference and that is pretty low when it comes to engineering. I'm always a bit confused when people talk about how space engineering solutions have to deal with "extreme" pressure differences when it's a maximum of just one atmosphere whereas submarines are build to withstand 30x that amount.
They get leaks in space all the time, and it’s only somewhat concerning... a leak in the deep sea is deeply concerning 🤔🤔
😊✌🏻
@@johnpenguin9188 Instant waterjet cutter
The bit in the Futurama episode is brilliant when the Planet Express ship is dragged under water; Farnsworth is counting off the big increase in pressure in atmospheres, when he is asked how many atmospheres the ship can withstand he says, ‘since it’s a spaceship, anywhere between zero and one’.
@@markiefella Another favorite Futurama gag was when they were in the moon, and nightfall was coming.
Moon Hick: Y’awll better get to shelter. At night it gets to -140 below zero!
Fry: Is that Fahrenheit or Celsius?
Moon Hick: First one, then the other.
Great video. You are my favorite science teacher. It's like science and shop class.
A fluorescent bulb has as much vacuum as does a chip bag have air
I never seen this awesome experiment before
Impressive! Very educative
Ooh, I'm happy seeing photonicinduction being quoted here :)
Always fascinating science!!
God, I love how well you explain everything
Sir ..love the way you explain...Here in India majority of Scientific TH-camrs waste more time on useless talks and stuff and explain and demonstrate a few...YOU STICK TO TH POINT AND ARE PRECISE IN DEMONSTRATION....
Love your Videos Sir
I love your videos
They are very informative
Very informative 👏
If you could lay the tube horizontally it would totally fill up. You have created a water based barometer where the weight of the water is keeping partial vacuum on top of the tube with the drop of water from the top being balanced by the atmospheric pressure being applied the water in your container. Kind of Cool to see. It kind of reminds me of how you are supposed to refill some automotive cooling systems. You use a vacuum pump and pull the system down check for leaks and then open up a line to your antifreeze. This fills up the whole system and ovoids airlocks.
Science like we have never seen it before. Thank you Action Lab.
Very interesting episode. I enjoyed seeing how much liquid was pulled into the tubes.
Good knowledge of vacuum 👌🌷
Totally just learned something 💥🧠
Love your videos 😁
Loved it!
Absolutely wonderful
Great video!!
Excellent video.
Liked even before the video starts while watching the ads
As i know it will be amazing as always 😁
Ideas for experiments --
1.can you try putting water in a vacuum chamber and then suddenly open it and se what happens when it is in the vacuum chamber and after you open. I think it will be really cool
2.can you try freezing fire that will be super cool
So happy that u finally got a sponsor
Long time...
I love your videos. I used to shy away from science from K-12, but your experiments make science enjoyable. Mel Science seems fun, and children can play doctor without any embarrassment.
Well I just got me some learning today
this is amazing! i had no idea these lights were 99% empty
I need you as my science teacher 🙏 ❤️
We were waiting for the video 🔥🔥 good presentations😉
His videos are always informative
Thanks for the great demo of the phosphor powder & the UVC light.
I would like to know where I can buy a small amount of this white phosphor powder please ?
Very nice!
i knew those were fun as a kid, but now to visualize the actual amount of vacuum was surprising. now wonder they were so fun to break, its literally all vacuum pretty much
Earliest I have been to any video...
Same
It s not big deal
It s a balloon stretched over a cup
Sorry... jk+glad
Loved it.
I knew fluorescent tubes were low pressure, but this demonstrated the vacuum really well.
When you break a tube, you don’t really notice the vacuum, just a popping noise then glass everywhere.
When I was an apprentice, before ‘green house gasses’ were a thing. I would break fluorescent tubes by ‘posting’ them into a skip through a pipe in the end of the skip, specifically designed to smash tubes. 😀
My fun was ruined when the skip was full of cardboard as the tubes didn’t smash as I posted them in, they smashed when the compactor ran, the noise was hidden by the compactor’s hydraulic pump ☹️
That was really interesting
For those curious, the liquid gets pushed up the tube because the outside pressure is pushing the liquid up the tube as inside the tube the pressure is lower than outside the tube. Feel free to correct me if I got something wrong
You are correct.
So if you have a long enough tube, eventually the water will stop rising, even if there is still vacuum in the tube above it. There's a limit to how high the atmosphere can push the water up.
@@korntut yes, that's why you couldn't build a huge straw into space to suck the oceans out
@@eddiefenton6309 😂😂😂
0:12 i did same when i was kid but very roughly just blocking tube inside of water bucket to see the vacuum .
Secondary seen on TH-cam of That Hight Voltage & current guy as he mentioned photonic ...
Now i like to see it again..
excellent !
You explains the science better than my science teacher
It's nice of you to credit PhotonicInduction before I even had a chance to finish my "other" sentence xD.
Safety glasses, that actually look cool! 👍
Fascinating
This guy can make science experiments from anything lying in his house.
Very cool!
Awesome!
Well that was pretty damn cool...I was expecting the 8ftr to shatter when you popped the end....but it didn't....🤯
Didn't think the 8 foot tube would completely fill up. I assumed the weight of the column of water would counter act the suction of the vacuum, I'd love to get more explanation and the math of that. Love you videos.
Nice, I was just watching the always up stairs video.
Photon is a really cool guy glad he's back.
The Mad Lad is back!!
Who is photon?
The name of the channel is photonicinduction
I didn't expect such a low vacuum, amazing since the glass is actually pretty thin. Though we always forget how strong the cylindrical shape actually is.
Yeah, didn't expect that too.
Guys it's time to take this amazing channel to 4M subs
That's cool!
a question I never knew I needed the answer to
Perfect volume question for math class!
Incredible
Very cool
Please do a video on dicyanin dye
Hello please could l ask a question , ls it possible to see the magnetic flux of a magnet being released when l heat the magnet with a gas lamp , also if l place a cold lron bar next to the heated magnet at the moment the flux is released will the iron bar become magnetised ?
Really like this video, great demonstration, you should change the thumbnail to get more views
You should upload in HDR for light related videos. Would like to really feel the bright of the phosphorus!
Another amazing video, You did a great job explaining the internal operation of the fluorescent tubes... I liked how you controlled the breaking of the vacuum seal, it always frightens me when they break... QUESTION: Which is it: do they explode? or implode? Anyway they're dangerous and a toxic mess too! I'm really glad we've switched over to LED "tubes" I'm not as worried about them (oh wait... should I be??)
If you break the evacuation seal they just inflate slowly. If you break off the end, the rush of gas filling the tube causes a massive pressure pulse, that shatters the tube from the other end, as it is pretty strong in compression with one atmosphere pressing evenly on the outside, but the pressure pulse from the inside will shatter the glass. That is why they shatter when dropped, you snap the one end off first.
@@SeanBZA Yeah that makes sense, it's a pressure wave and 1 Atmosphere of pressure is huge compared to the low pressure inside the tube. When these tubes break I'm more worried about the glass flying everywhere and concerns about the toxic materials than notice which end hit and how they exploded, err broke apart, and I'm not too keen to find out either... it's more of a curiosity to understand what's happening when they do.... Thanks for your reply.
LOVE YOUR VEDIOS.....FOREVER SIR............
I got a question about vacuum bleeding. I had a radiator making noise in my apartment and tried to bleed it. I kept being unsuccessful and started trying to figure out why it is. I found out the bleed nipple was not at the highest point of the system, the radiator was slanted the wrong way. When I contacted the technical support they tried themselves first but ended up having to increase the pressure in the water circulation to finally succeed.
I've since had the pressure down so low that opening the bleed nipple sucked air into the system instead, but in the case I'm describing the bleeding still worked to the extent that it alleviated the problem but did not solve it completely.
My question is how does it work and to what extent? Can I put the bleed nipple right to the bottom of the radiator if I pull a vacuum in my apartment?
If you think of a bicycle brake system with DOT fluid (SRAM or Hope for example) the bleed process includes pulling a vacuum from both ends. But if there is a syringle that is trying to pull a vacuum in a system, can the syringle pull air into itself from higher up than the top level of its own volume? Why does it need to be done from both ends and not just the top?
Thanks
I'm in Australia, thanks for uploading at exactly 1:00 in the morning. 😑💤
And you're still awake.
Australia? I’m sorry for your loss
One time I saw a fluorescent light tube explode
On video & the gentleman was
Very surprised he didn't expect at all !!
Is it possible to manipulate the movement of blood ( increase the blood flow) in humans arteries using magnets??
Or, to correct/increase the signal processing in a blocked 'Nerve', the patients with paralysis may be befitted with it.
In Magneto-therapy, the magnets are placed on the wrists/ankles/knees without calculating the size/power/ polarity of the magnets.
Let's give this brother 7 billion subscribers
Wow never knew that
When I seen the title I wondered did he copy photonicinduxtion then he shouts out the channel that's awsome
Dear James, changing the subject a little, have you thought of trying colour separation using an ultra-black background rather than a blue or green background? I think it could produce some very convincing results, as long as the foreground contains no really dark objects.