What Happens When You Turn On A Broken Light Bulb In A Vacuum Chamber? Will It Burn Out?
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- Опубликовано: 23 фев 2017
- In this video I have two broken light bulbs that I put in my vacuum chamber to see if they will burn out or not. One of the light bulbs I put with air in the vacuum chamber and the other I suck out the air. This test is because usually incandescent light bulbs are under vacuum and have a some inert gas in them to keep the filament from burning out. So I was guessing that the broken light bulb in the vacuum chamber would last much longer than the one in air.
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Развлечения
Put in 2 bulbs using the first one to get rid of the oxygen before starting the second one.
Get this pinned!!
Fletcher Hurst that's smart
considering the low pressure and consequently lack of air in there it might actually burn all if not almost all of it
A candle would be easier.
The best thing would be to get a good vacuum pump. End of story.
Point a laser through the vacuum chamber, then start sucking the air out
Would the laser start disappearing? From my (limited) understanding, you can only see lasers due to the beam bouncing off the gas particles and dust. A few prisms tossed in could make it more fun too
cool
You noticed the second one was thinner since in vacuum due to very low pressure and high temperature the filament sublimates, that's what the gas ring was and that's the reason it only lasted 6 seconds.
Learned so much science from you, Thanks!
Mate love your videos, but can you please lower the volume when removing the air from the chamber. Thank you
Great experiment. Always I had the same question, and is the first time that can see how it can works after the glass are broken.
I don't think it will burn out immediately, but will last a lot less than if it was in its original glass envelope. My guess is that it will last about 12 hours of continuous use.
I think this because normal bulbs are first filled with an inert gas, and then under vacuum, so that any remaining gas is still inert and won't react with the filament.
But in this case, you're going from air to vacuum, so there will be a small amount of oxygen left, which over time will affect the filament.
I could be completely wrong, but I would like to share my hypothesis.
+Dan Coulson yeah I thought it would last a lot longer than it did, but I think that unless you put some inert gas in there there will be enough oxygen to burn out the bulb.
OK, well my guess for exactly how long was way off. But I'm still happy I correctly guessed it would last longer.
I think that light bulbs are also made with a way more powerful vacuum... But im not sure
BlaXeD ! it's not about the suction power of a vacuum but the materials used to make a lightbulb last longer while in use
Light bulbs are actually filled to about 0.7 bar with an inert gas, usually nitrogen, argon, or a nitrogen-argon mix.
This was very interesting, thank you!
Using the metal valve and hardware on top of the chamber as electrical conductors with gator clips was brilliant!
I find these videos oddly satisfying along with the hydraulic press ones.
great video :) I really love your ideas... eveeytime I'm like "that'll be amazing!" and also congrats for all the tricks you find to be able to do shat you want. Don't stop! :)
Bro, this experiment is lit.
awesome cant wait to see whats next
Lol, when you showed the powerstrip with the leads jammed in, I cracked up.
Great work
oh wow, that was way interesting! l loved it!
The tungsten melted and/or sublimated as the temperature of the filament got over the fusion point of the metal (the light color temperature visibly increased just before). The absence of an inert gas caused excessive heating and accelerated sublimation of the filament
this video is pretty LIT
I think if you had a gauge that would show very low vacuum pressure more accurately, you would see you probably need to run it a lot longer to get as close to a perfect vacuum as you can. I would also leave it running in case there is a little bit of leaking. Of course other suggestions to add in some inert gas would also help.
If you add inert gas, you're just making a light bulb, which defeats the purpose of the experiment.
Finally after commenting this on your last video when you crushed a bulb you did it 😁
+RGHxFTW it was an interesting idea!
Surprised. Thumbs up.
the plate of metal in the filliment repulses the ionized molecules in the rarified air of the bulb's vacuum, otherwise, as tesla pointed out, the rarified air left in the vacuum literally attacks the fillament with erosive friction which eats away at the fillament until it tears it apart. the metal plate is used to attract the erosive molecules. when the bulb glass changes shape, the pressure zones of the rarified air changes. a hole in the bottom of the bulb should last longer. also a dimmer switch would help. great video. still very surprising.
Ok?
You creep me out, but I do enjoy your experiments.
I suspect that the reason the filament failed in a vacuum is that it was in a vacuum. This allowed the filament to evaporate when it heated up. With only a few millibars of atmosphere present, the filament doesn't have to heat up much for its vapor pressure to exceed that of the vacuum, and thus the filament starts to evaporate. In addition, the lack of a gas environment means that the only way for heat to transfer away from the filament is by radiation and by conduction through the filament's physical support; thus, the filament heats up faster, which speeds this evaporative process. The filament fails when it ablates away enough to break, or when part of it melts, whichever happens first. The ring of smoke you observed in the video isn't oxidized tungsten, but rather condensed tungsten vapor.
An intact bulb is filled with around 0.7 bar of an inert gas, usually argon or nitrogen, and that means the filament does not evaporate nearly as much, both because of the higher surrounding gas pressure and because the gas atmosphere conducts heat away from the filament, helping to lower its temperature.
loved it
+Hydraulic Press Action I'm surprised that the one in vacuum didn't last longer. I guess the thin filament just vaporized too quickly.
I think you should try this with your chamber filled with argon or helium at atmospheric pressure to see if it lasts a really long time. If it doesn't, something's wrong
smart. i was thinking how are you gonna seal up the hole where the wire goes in.
that is surprising, I figured it would have lasted a lot longer in a vacuum.
what about with pump still running?
these bulbs are in fact filled with a gas, called argon, which is added on top of the vacuum to help the filament not smoke and last way longer.
Interesting
Try sticking suction cups to things, see if when it is a vacuum they stop sucking.
Pretty cool, next time use a lamp dimmer to gradually increase the voltage.
If anyone is wondering why the one in vaccuum is thin.. its because it melted...
As the bulb was turned on, currebt started to flow. Due to the flow of current and resistance of the filament, heat started to build up. Now normally in a bulb with inert gas, the heat generated would be transfered to the inert gas molecules and to the surface of the bulb. But in vaccum, there was nothing to loose the heat to. And the only way to loose the heat was via. radiation, which is the slowest mode of heat transfer. Hence due to the constant flow of AC current, and the heat energy building up, the filament soon reached its melting point and staeted to melt. But as it melted, it got thinner. And as it got thinner, its resistance increased, which led it to get more hot and glow more... and the process stacked up and ended in the burst of light and the melted filament.
The thickness of the filaments is a HUGE factor. If you can get some inert gas, like argon for a mig welder or helium for a tig welder, try back filling. Pull your vacuum, introduce the gas until atmosphere, then, pull again. I'll bet you'll get the longevity you're hoping for. Even if your pump could pull the vacuum of interstellar space, the filament would sublimate, coating the vacuum chamber with a black film of condensed tungsten. Halogen bulbs are back filled to a higher pressure, but because of convected heat, that's why the capsules are small. The higher partial pressure keeps the filament from sublimating at higher temperatures. That's why they last so long, and so bright.
Hey Hydraulic Press Action, Love ur vids :D keep up the good work.. btw 15th Like! :D
The reason why the light bulk died in vacuum is not caused by oxidation, but it's because the filament was too hot that it evaporated and then break down.
However, when the filament stays inside a light bulk, it will not evaporate, as the filament reach its chemical equilibrium between the gas state and the solid state inside the confined light bulk.
Wow. Can you try a match in the vac. Maybe try to ignite it with a current or a strong laser. It probably won't flare up but I wonder if the match head will melt or something.
Well I mean they make special types of lights for space but my guess is that it would work.
Did you consider that the filaments could have been the same size going in but had different dynamics when they burned?
@theactionlab you can remove the vacuum chamber noise by recording your voice separately
They stay 💡LIT💡
can you put a decibel meter and a speaker of some sorts in a vacuum, and see if it will reduce the decibels or not while under a vacuum?
Hopefully it will
You could have put some liquid nitrogen in the chamber first and then drawn a vacuum on that to remove all the O2 as much as possible. It should be a lot colder than the regular atmosphere so the regular atmosphere should float on top of it, as you pull the vacuum. You might have the lightbulb work for a good long time once the temperature gets close to room temperature.
Nitrogen. an inert gas which prevents further oxidase of the filament "Actually prevents overheating of the filament." . added in place of Air. first the bulb is vacuumed completely of all air, then Nitrogen is pumped in to displace any gasses which are left. This prevents it from burning out.
Here's an idea: take the bulb and put it in a chamber filled with an inert gas like argon to displace the oxygen. You can test it in that and then siphon out the argon for a similar test.
Do you do any arduino coding/electronics? That could open up a whole new set of experiments to do in your equipment
+Hydraulic Press Action Oh and I'm guessing that the filament in air looks so thick and black because of the thick oxide layer over it
many oxygen free electronics are either gas purged before vacuuming and or have 'getter' to bind up all the free oxygen via some other chemical reaction(usually another oxide if I recall)
thumps up!
Incandescent light bulbs are filled with halogen, which isn't inert like the noble gases. The chemistry is quite fascinating, and is the reason why unbroken incandescent lights can last hundreds of hours. Some "xenon" incandescent bulbs have a tiny bit of xenon along with the halogen, but these are not true xenon plasma bulbs. Some incandescent light bulbs are filled with a mixture of argon and nitrogen. These have a black deposit on the glass when the globe has died. See en.wikipedia.org/wiki/Halogen_lamp
There’s a veritasium video that explains why there’s such a big difference in your filament diameter
I think in the vacuum it vaporized, due to low pressure, while in air it oxidized which slowed further oxidation. Perhaps that's why it lasted so long in air, and so short in vacuum.
I so much would touch a unplugged extension chord and there'll will still be a way Id get shocked
Doesn't the inert gas in the lightbulbs also cool the filament so it doesn't reach the melting point?
In a vacuum, the filament would increase in temperature until it melts.
This is a prime candidate for the disclaimer " please don't try this at home".
how about static shock through a vacume?
Interesting...
will a glow stick glow in a vacuum chamber?
I have my predictions
good idea, lets hope he sees this and considers
Bob Jenkins damnit you're right. what if he poured the liquid out into a cup? then, if it glowed, it would just boil?
When my glowstick will stop glowing Id put it in the fridge and once it will melt it would glow again
I'm sure argon gas is used in light bulbs. it is more common in earth's atmosphere than CO2. Welding torches use it to prevent oxidation at high temperatures.
Will a taser/stungun work in a vacuum? And if so, will the spark be visible?
You can instead of only sucking air them connect the the other end with nitrogen gas to let it get in and then light it again! The light bulbs contain a little amount of nitrogen gas in them that's why they hold so much nitrogen help the wire not oxidised ! 👌😉
probably it has overheated for the absence of gas, try with a dimmer to lower the tempearture.
The one that had a thin filament must of had a pure tungsten filament and the thick filament was tungsten alloy.
Will the element burn out in water?
You can use an isolation transformer which is a 220 to 220v transformer (or 110v).
Just get two old identical iron core transformers, dissasemble them, remove the secondaries, and put both primaries together, then reassemble the Es and Is.
That way you get two phase current that is not referenced to earth or ground... so as long as you don't touch BOTH output cables you are fine. Touching one (any one) will just give you 20v or less when compared to ground voltage.
en.wikipedia.org/wiki/Isolation_transformer
I want to see smoke reactions in the vacuum
I wonder if it has to do with the size of the vacuum chamber??? What if you put it in a smaller chamber? Would it burn longer?
What if you add nitrogen gas instead of air after vacuum then turn it on?
Light a cigarette in a vacuum chamber. Let's see how long the fire last and see what the smoke does in a vacuum.
We went from luquid nitrogen, 1k degree knife and hydraulic press to vacuum chamber. I love humanity !!!! :)))))))))))))
Slonderman next it will be Can it survive being shot from a cannon. Mark my words
lol i would not be surprised
i have the exact hairstyle as you do😉
+Ruslan Gogoah my hair in this video was the "oh-crap-better-run-my-fingers-through-my-hair-before-I-hit-record" hair style, lol
😂😂😂😂😂😂😂
Put a bacon egg and cheese in the vacuum chamber... that would be litt deadass B!
THIS MADE ME SCARED 😳
Ok, next time do install a proper way of getting current in there. It always comes in handy with vacuum chambers, and I'm not only talking about electricity as it is. I've seen people rig up little motors with spoons to start chemical reactions inside a vacuum, to name one example.
Maybe the filament somehow got too hot because I saw some blue light from it
have you done water in a vacuum yet?
There's several good suggestions.
Fill the chamber first. Co2, helium, argon, or from a can of dust-off, then turn it on, then try vacuum. Can the chamber hold pressure? like 1-2 psi?
Dimmer to turn it on slowly.
2 bulbs, and dimmer. To see if the first one consumes any reactive gas.
Looks like you used 45-60W. Try 15W.
Safer wiring.
Or even just a flashlight bulb.
I'll bet Edison did all of that.
You need a do-over.
Please try a broken halogen bulb
can you try a piece of dry ice and water on it,what happen ?
I think it's not about the oxygen in the second, but it's because it couldn't dissipate. try putting liquid nitrogen in chamber, then make vacuum, then turn on light :)
Try carbon fiber ( the tissue ) instead of a filament ...
I guess that the filament is cooled by the inert gas, so in vacuum, it overheats.
It's because the filament was thinner
put 2 bulbs in the vacuum , first light the one and when it goes off after that switch on the other one lets se whether it will survive
Don't incandescents need argon gas inside to keep from burning out? So, that is what the vacuum would be lacking, right?
Will bread rise in a vacuum? (I'm thinking of the reaction with yeast)
Cliff Tomkulak
I think the vacuum would kill the yeast.
lol science
U should try filling the vaccum chamber with a gas heavier than oxygen so that all the other gases especially oxygen gets out of the chamber. Then turn on the vaccum and when its fully vaccumed switch on the bulb.
Oh I know why that filament didn't last long in vacuum. Well that extreme heat of the filament accompanied by the absence of air pressure made the metal in the filament to vaporise and form a white coloured ring of smoke that you saw in your vacuum chamber.
The same thing happens with Dan Rojas from Green Power Science channel when he subjects peices of metals to the heat of fresnel lenses.
Can you suck the air from below (flip the chamber upside down), will you be able to achieve even better vacuum as the air gets drained out?
Maybe if you keep the vacuum pump chamber on?
They can't oxydize, that's right, but it reaches 3000-3500 degrees, so it melts
It vaporizes 8o
The melting point of tungsten is around 6000 degrees fahrenheit.
Can you pop popcorn in a vacuum without heating it?
Could you put two effervescent tablets into water and then right after put it in the vacuum chamber
Please I've asked everywhere but no one will do it
it will work with argon gas
Ok how about filling the chamber with nitrogen. (1) Run a bulb with 1 atm nitrogen, (2) Vacuum out the nitrogen and then run second bulb. Either both or at least the second should run hours.
Let's do the smoke in the vacuum chamber again!!!!
What about if you put a few candles to burn out the oxygen then light it. There is more to be done with this.
Did you make your Vacuum Chamber?
looks like he got it from here www.bestvaluevacs.com/acrylicchambers.html
I bought one from them with a metal chamber, it's pretty cool.
Who else had anxiety through this video that something was gonna go wrong?
the light bulbs look very different in design though🤔