What Is The Temperature in a Vacuum Chamber? Is it Hot, Cold or Neither?
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- เผยแพร่เมื่อ 31 มี.ค. 2017
- In this video I measure the temperature in the vacuum chamber. I did this video in order to simulate what it would be like measuring the temperature of space. I show what happens when I put the thermometer in the vacuum chamber and then talk about what happens and why. Then I talk about how space is a vacuum so it is insulative against heat passing through. Then I talk about how even though space is a vacuum it can steal your heat because it does not return the radiation that is emitted from any warm object. So eventually everything will freeze in space!
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Ok, I really gotta sleep, there's a hand teaching me science!
You should check out ThisOldTony
😂
😂
4:30 Thanks for the explanation Mr. Hands
Sock puppets would've been a nice touch.😀
Can you put your entire vacuum chamber on a scale and weigh it as you take out the air? Love the channel.
It would weigh less by approximately 1.25 kg per cubic meter of chamber volume. This is the weight of ambient air. Helium weigs approximately 0.002 kg per cubic meter, and therefore provides almost 1.25 kgf of lift as a balloon. Using complete vacuum you could achieve slightly higher lift force, but no material exist that could withstand atmospheric pressure and weigh a small fraction of the volume of air it would displace. Putting gas in a lightweight thin walled rubber balloon is easy, however.
shut up meg
+Mi 28 I think you mean 0.08 kg/m^3 for Helium
I think it would stay the same. because the air inside is 1 atmosphere, it would weigh virtually nothing in earth's atmosphere. therefore it would be the weight of just the box with or without the air.
@Kun Kodiik: It would easily be measurable - Cody from CodysLab did it.
only youtuber who uses celsius, respect for that I love it.
Of course 👍🇬🇧🇬🇧🇬🇧
😁
Only AMERICAN to use metric
Set your location outside of usa, it might chnqgs
When you don't feel like going to school just stick your thermometer in your vacuum
or cause different things to go into other states of matter, that to.
@@Anthonypython fire ?
Perfect explanation. One note: in the movie Sunshine there is a moment when somebody goes into space without the spacesuit, and suddenly gets frozen in 3 sec. That's completely impossible, as the only way to loose heat in space is through radiation emission, and the rate at which one looses heat through this process is extremely low comparing to, e.g. heat conduction.
+Jorge Emilio Jordan Cergnar yes it would actually take about 4 hours to freeze solid in deep space not 3 seconds:)
Yes, and the pressure drop would more like boil the water at first - as we could see it from the previous nice experiments - and the final result on body might be very nasty. A sudden freeze looks just much better on big screen, though it is stupid from scientific point of view.
The surface of the skin might get pretty cold pretty quick, assuming its not in direct sunlight. But yeah instant freezing solid of a whole corpse ain't happening.
Jorge Emilio Jordan Cergnar you are wrong
In space, if we are to believe it's a vacuum, yes you can freeze instantly or vaporize instantly, depending on if you are facing the sun or in the shadow.
In the vacuum of space, there isn't any atmosphere to protect you from sun rays. The temperature just above the ozone layer ranges from 0 degrees Celsius in the shade, to 250 degrees Celsius in direct sunlight.
Imagine the temperatures as we get higher into the stratosphere or thermophere. The temperature range gets exponentially higher. In the thermophere for example, in direct sunlight, temperatures exceeds 3000 degrees Celsius
That was very interesting!
Cool Video, keep up the good work.
I think you could do another video on how thermometers actually work (and the many different kinds). Maybe expand on radiative heat exchange and how certain measuring devices are used to measure the radiative temperature vs thermometers that measure ambient fluid temperatures combined with radiative energy.
play a speaker inside the chamber really loud, then vac it out to see if you can still hear it
Gator 157842 i think no pressure no sound , may be only boom boom be hear
Gator 157842 he already did that.
+Gator 157842 already did that one
Have you tried cymatics with sand and water? I'm very interested in this
You wouldn't be able to hear anything because there is no air...
The higher temperature at the end maybe due to the friction of the nozzle when the air rush back in.
The moving air is work done, and the work done should end as heat.
Yes it is basically friction with the tube and the gas itself. In thermodynamics there is a term "equilibrium process". Equilibrium means that temperature, pressure etc. are the same throughout the system. This process of course would never happen. If there was no pressure differential between outside and inside of the vacuum chamber then the air wouldn't move back in. In reality you can only get closer and closer to the equilibrium process by making it go slower. Any process in real life is non equilibrium.
Another thing to consider is that he actually did work on the system when he pumped the air out. There is energy in the form of pressure differential that has to go somewhere. In this case it all turned into heat. If he let the air in slowly to get closer to the equilibrium process he would have to harvest the energy for example with a piston that would move very slowly while turning an electric generator or just being slowed down by friction heating up the friction material instead of the gas.
I made a simple calculation of how much the air would heat up if all the energy went into heating the air
P V = m c (t2-t1)
m=rho V
P V = rho V c (t2-t1) ... P is ambient pressure, V is the volume of the chamber, rho is the density of air, c is specific heat of air, t2 is temperature inside the chamber after the experiment, t1 before the experiment
(t2-t1)=P/rho/c
plugging in
P=10^5 pa
rho=1.3 kg/m^3
c=1000 J/kg/K
we get
(t2-t1)=80K
or
(t2-t1)=80°C
This means only fraction of the energy went into heating up the air. The rest probably heated up the tube and the valve or escaped as sound.
Yes, pump up a bicycle tire and feel the valve stem. It absorbs the heat from the compressed air, and some of that heat also goes into the tire (or vacuum chamber).
Yes. That's what I thought. Plus the vacuum appliance must have also transferred some heat on to the sucked air.
wrong
Man of Cx.
Your videos are always interesting. Keep up the great job!
I love your vacuum chamber . & thanks for the simplicity of your explanations .
The "nothing" temperature (no heat) is 0°K, or -273°C. The temperature the thermometer is showing is the equilibrium of heat radiation in the room and the probe's original temperature.
Was expecting an April Fools video :(
+Liberator space is no joke...and I forgot it was April fools:)
True that.
Hydraulic Press Action "SPACE IS NO JOKE!"
Liberator ya, him saying he's going to put his penis in there would be funny.
Shicron YES would watch 10/10 best video 2017
Amazing one ! Thank you for the demonstration and the precise explanations !
Thank you! I've been wondering this forever
What will happen if you put ice cubes in vaccum chamber which have air bubble inside them? please do this experiment and upload it here. I want to know this. Thanks.
Gaurav Bondale what happens to ice cubes in general in a vacum chamber that is in a room with 18°C
Nothing will happen. He'd tested Swiss Cheese in a vacuum, with much larger gas bubbles and much softer solid holding them. A few very near the surface popped by the rest were fine. He even tried it with a super soft cheese like Bree.
Can you put a light object and heavy object in vacuum and release it at the same .I think both will fall at the same speed because of lack of air resistance .
no they will both fall at the same speed cause vaucum can still obey the laws of gravity if its not in emty space. Emty space would have no gravity therefore speed would be = momentum speed. Nothing really stays in one place tho.
I don't think you understood him.
To the op, you are correct. Gravity is caused by the mass of the earth, and vaccum or no vaccum has nothing to do with it. Even in space we are in the gravitational field of the earth, however we are going in a circle around the earth fast enough to perfectly balance that force, thus we don't feel it.
Someone did this in a huge vacuum chamber with a feather and a bowling ball
Thank you for your videos, I do actually learn something from them
Best explanation on this subject I have heard!
do that experiment again but this time use a heat lamp the heat up the thermometer while it's still in the vacuum chamber to demonstrate the sun heating an object in space through thermal radiation.
+Peter Granzeier yeah I thought of that later that I should have done that to simulate the sun in space
Maybe the temperature got hotter than it initially was because of the friction when you let it back in, the air went through a small hole very fast.
Nice explain
And great information
I found most of the channels like you do a lot of overaction with low content but you are lot more better than everyone 💙💚💛🙂
Great lesson...Thank you
also it's the speed of how fast the air went in I think it was fast it rushing in so fast could warm the molecules up this is educated guess to me but ages sense in my mind
Exactly, you can feel this when pumping up a bicycle tire, the valve stem will be warm to the touch as it absorbed the heat from the compressed air.
Nice video man
get more cool videos done ;)
I was really looking forward to this video
Amazing video!
Space ≠ vacuum. There are so many other variables, especially when it comes to temperature. For example: being close to the sun vs being far away from the sun.
The only variable that needs to be explained is that Vacuum as a definition can't contain any particles. High energy particles that the sun releases and light particles don't allow the temperature to be at an absolute 0 so a Vacuum will never exist in space, even if you are 30000000000000km+ away from any stars or energy sources.
@@Lensquik There's no such thing as "light particles" lol. Light is a 'vibratory wave' of the aether.
is there a way you can dye the air and turn on the the vacuum chamber just to see the pattern at which the air comes out is it proportionally or is it bottom-top
Mohamed Yasin probably use smoke
Mohamed Yasin he could be it might potentially damage his air pump for the vacuum
Water vapor might be a better idea. K wonder what would happen if he put an e-cig in
Thanks for explaining bro👍
Great video. Very instructive. :)
put 1 cube of dry ice in that chamber. let's see will the vapour comes or not....
your really not a press channel anymore your a vacuum channel
Incredible! Thank you. :-D
Very cool! It would be great if we knew the vacuum pressure within the chamber. That would provide a little context with the neighboring atmospheric pressure/ temperature. Keep up these interesting videos. Love the laymans terms!
wow way cool, l guessed it would get colder :)
Thanks for spoiling the damn video. Your comment showed under the title so no I didn't click on comments and spoil myself
1st comment and 5th view love your vids man!!
awesome!
:P
Kelton Conn Not 1st, Not 5th..
Firel Playz okay
Could it be... Another Kelton... Wow my life is complete now
when you fill up a scuba tank it also heats up quite a bit! warm to the touch. very interesting stuff!
i was searching for this and i bet i'd arrive to your video
4:20 talk to the hand
Ever see those high altitude videos that was popular some years ago? These "edge of space" experiments actually have problems with the electronics overheating, not freezing.
Why? Air does become colder as you climb the atmosphere. But then you have a piece of equipment generating mild heat in an area of high altitude with direct exposure to the sun and virtually no air in which to cool.
All the experiments are super cool
This is a seriously important experiment.
If vacuum doesn't support heat transmission through it, how do we feel the heat of sun which travels all the way through vacuum to reach earth...?
because it travels as light. Ultra violet, infrared and visible light
Because the "vacuum" supports heat transmission through radiation. Light transfers the heat.
That's also what heated up the thermometer in the vacuum chamber (infrared light).
Vacuum does not support heat transmission but it supports waves such infrared and ultraviolet, which allows heat
There are three ways to transfer heat: Conduction, convection, and radiation. Both conduction and convection ultimately rely on the atoms being able to transfer their kinetic energy (i.e. heat) to other atoms by coming into physical contact with less kinetic atoms (colder) of a different object. Since space has almost no atoms at all in it, there is barely any conduction or convection happening between you and space. Radiation on the other hand is transferring heat by sending out changing electric and magnetic fields perpendicular to each other (i.e. light/electromagnetic radiation) which does not require atoms to be present in order for the fields to move through space.
Vacuum is cold, because vacuum is absence of oxygen, or any other gas, just as coldness is absence of heat.
If you leave your fridge open for too long, it's the heat getting in, not the cold going out.
Kinetic Kiwi even if you isolate every atom of gas from that chamber or in the empty space itself, heat will transfer through infrared radiation, and that is what the guy is trying to prove, no matter what the insulator is used the heat will transfer either one way or the other thus eliminating the myth.
It is cold because of pressure decrease, it doesn't warm up because vacuum is a perfect insulation. Do your research boi
Kristopher Prevo don't mean to be that guy, but you used the wrong "Youre"
Ya phone edits if I don't put apostrophe its cool point was still valid
Kinetic Kiwi Yea, and there is little to no air friction therefore space that is isolated from hot matter is cold
This is why you have to continue supplying heat for isothermal expansion of gas and also why temperature drops in adiabatic expansion. The pressure drop can be thought of as expansion. Thanks for the video.
This video made me happy, I feel like I'm learning how to learn better. I was just putting a warm beer in the fridge and was thinking about air temperature in the fridge vs the room and a thought popped in my head, if I put my beer in a vacuum chamber, will it chill it quicker than the fridge, or put the vacuum chamber in the fridge and super chill it, then I started thinking about thermoses, is it just a vaccume between the layers? This video blew my mind a little bit.
On another note I would love for you to try the beer in the vaccum and in a fridge and both together.
hi there can you answer this does light push or not
+just drew yes it has momentum
Hydraulic Press Action what did you study? love your videos
+Gunship I'm a Chemical Engineer in real life:)
Hydraulic Press Action wow that sounds hard xD
That's what she said.
You should have used 2 thermometers one placed inside the vacuum and another outside.
Devansh Jani what would be the point we arent vacuuming the whole room
Yuvraj Prime WR It's not stupid, have you heard of a control? So you can compare the two temperatures.
Yuvraj Prime WR It's like vault 76...
Yuvraj Prime WR shutup stupid
Gupta fripta! Socheres mamaliga cu orez chicalakachichicea @@SimpleModzz
Great experiment, interesting results. You must remember that the "air" int he vacuum chamber is not just gas. Out air carries some water vapor that includes liquid. reducing presser or adding pressure all boil or condense some of that water effecting temperature. Also "space" as we know it when completely void of matter (or so close as to be the same) can still have electromagnetic ration passing through it. Space near Earth has a ton of sunlight going through as well as a solar wind of particles.
Very nice video.
Hell yeah Hydro Flasks!
The vacuum has nothing to do with how cold space is. The temperature of space is dependent on thermal radiation. Space is over 110 degrees near the International Station when it's in the sun, and below -100 when it's not. Space gets as cold as -420 sum however
Absolute zero is about - 273°C though
@Wall2WallReno lol?? get a telescope and look up, what's your point and why mention this here
@Wall2WallReno take a telescope, doesn't even have to be really expensive one. go out during a good night where the sky is clear and the ISS is above you. look at it. you can clearly see it, its shape and everything, period. i've done it myself. if u just wanna see that it's THERE, your eyes are enough to see it as a brigt, weird moving dot.
well it is as big as nasa claims. if you know the enlargement (is that the english term for it??) of your telescope, and also how big the ISS appears on the picture (there are telescopes with cameras for example), then you can estimate the size of the ISS pretty well. and if it's manned?? i see no reason why they should lie if everything else was correct as well. also, with a _really good_ telescope you can see astronauts during a space walk.
@Wall2WallReno yes there are photos. and even if there weren't, that would hint more at the fact that our telescopes need to be improved, not that governments worldwide try to hide this one unimportant thing for _whatever reason_ . don't trick yourself into thinking you believe all that stuff because there's actual evidence. you just _want_ to believe it, which is, you know, fine... just not really scientific.
Space is cold, if you put gas in a contained vessel that was transparent (see through) in space my understanding is that is would be freezing cold as the light would pass through both the container and the gas and any heat caught would quickly dissipate. If a non transparent object ie. a person was in space, setting aside the fact your blood would boil etc... you would feel the heat of the sun on any part it touches but if you are far enough out of earths protective magnetic fields those sun rays will heat the skin to almost instant combustion and burn. But at the same time there is no gas around to spread the heat so that means any part the sun isn't touching will pretty much freeze. The reason earths atmosphere is so comfy warm is because Earths surface catches the suns rays and heats up which in turn heats the gas atmosphere, but before soaking up that huge amount of harmful radiation the sun is billowing at us, the earths magnetic field filters those rays and pushes a great percentage shooting around off to the sides leaving a perfect amount of rays for us down here. also some of these electrically charged particles fall back to the earth at the North ans South poles in big clumps and react in an amazing way with the atmosphere creating the Aurora Borealis and the Aurora Australis.
Has anybody found this vaguely interesting at all...
The gas would absorb some energy from the sun. It may allow all the visible light to pass through but there's lots of other wave lengths coming from the sun. As far as the person in the sun in space, you'd get pretty hot but you forgot about thermal conduction. The heat can spread around through solids, including your body. Wouldn't help tho you still dead
best video till now
Thank you! I guessed this would happen, and this will help me win an argument elsewhere.
then why water start boiling in vacuum
boiling doesnt mean hot.
Elian Ramirez liquid nitrogen boils in vacuum and atvsome point it changes to solid nitrogen
Talha Khalid if you put eggs in a vacuum they will boil, but they wont cook, just maake bubbles.
Talha Khalid It's because of the reduced pressure within a vaccum. The moleculs in the water have "free" space to get out
its not boiling
its bubbling because oxygen is escaping from the fluid
PUT LIVE WORMS IN THE VACUUM CHAMBER
love the Kona Brewery flask!
This is like a whole science class. What im back in school science was my fav subject by the way cool vid. This is the Big Bang theory!! Lol
*DONT CELEBRATE APRIL FOOL! !!!*
answer will be given if someone asks!
Mr.IDEA! Why xD
ill tell u
Roi Gipot why
*Mr.IDEA!* BUT WHY!??
The April fool is the comment not the video, duh!
Heat can be transmitted through radiation. It does not require a medium and hence it does not matter if you have vaccuum. In conclusion, this video has made a stupid conclusion.
Janardhanan Sivaramakrishnan indeed. He was measuring the temperature of the walls of the vacuum chamber.
There might me no gas for conductive heat transfer, but radiative heat transfer works just fine.
Did you watch the full video? At around 5:10 he clearly says that you'll freeze in space by radiation. You have made a stupid conclusion.
Ironically you reached a stupid and arrogant conclusion.
But surely you would boil as you lose less heat in radiation than the heat generated by your bodies metabolism?
Janardhanan Sivaramakrishnan The point of the video was to show that a vacuum itself does not have a temperature, yes, radiation still occurs but the vacuum is not the one affected by it.
I was wondering something else... why does the tape not expand in a vacuum?
Thanks for the video man, you just got a sub.
Nice vid!
Heres an idea electrolysis under vacuum?
can you stop filming only ur hands only if ur explaining something
Machiel Luchtmeijer stupid comment
I LOVE his fucking hands
Yall just wanna see what them hands do ... get it
Vídeo excelente. Eu queria ver um experimento parecido com esse pra demonstrar a temperatura que superfícies com tonalidades diferentes (claro, escuro e espelhado) ficam quando absorvem a luz do Sol no vácuo.
Drop a piece of metal into oobleck inside a vacuum chamber. Love your vids man
I can personally vouch for that "Hydroflask" vacuum-walled thermos that he's showing at 3:55. It's a vacuum thermos but it's stainless steel so it doesn't shatter when it drops on the tiled gym locker room floor (which it's done twice). I've had cold spring water in mine (at about 38 deg) that gained only maybe 10 deg. overnight in a 72deg room.
You are really smart and I love you video's
Wow amazing
cool, good job i subed
Excellent experiment. I would like to see what happens if you leave the thermometer in the vacuum overnight, and then let the air back in, seal it, and leave it like that overnight. This would give any moisture and temperature differences time to even themselves out.
There always might be slow changes that you can't see while you're watching it. We do know that a vacuum increases evaporation, and that evaporation is cooling, so I would like to try it on a low-humidity day, and then on a day that it is raining, or muggy, to see how much moisture plays a part.
Then we might be able to calculate whether the vacuum affects temperature if there isn't any moisture present. I don't think it will.
the chamber first lowered in temperature partially due to the ideal gas law while the bulk gas was trying to keep up with the pump.
the reason that temperature is higher than room temperature when you vent is due to 2 reasons.gas molecules in the chamber under pressure were allowed to rise back up to room temperature, which further increased in temperature when the system was allowed to vent and effectively compress those initial molecules. the second source is due to friction of air flow as you vent the system.
I wondering and wants to know , if heat is vibration of eletrons and it always flow hot to cold side with medium , like when we put hot tea in cup , over time tea loose its temp because of heat conduction and convection , but if we put same hot cup of tea in space its temperature should be same for long amount of time because thera is nothing to take its heat eneargy ( by ignoring or capturing inside its thermal radiation emmition ) but why it will be super cooled ( because it is said to be that object far from star are super cooled in space vaccum )!??
I think the easiest way to explain the temperature drop is that the mass of air in your chamber is holding a certain amount of heat energy. When you close the chamber and pump out the air you have less total heat energy occupying the volume of your chamber because you have removed the mass holding it.
That was good video. I guess by taking out the air you take the heat the air had with it during the vacuum process. Then immediately after pump stops, heat rises because there is still heat stored in the chamber walls and thermometer itself. But you managed to reduce the temperature at least for a brief time 4 degrees Fahrenheit.
This gives me some good ideas.
Try doing the experiment again but only with a bigger chamber, or with the same chamber but insulate the outside walls of,the chamber to see how long the temperature stays dropped 4 deg.
6:20 may be because of heat peckup by around plus heat generated by compression ( in same way that refrigerator works with lower then 100 % efficiency mean more heat then cold )
i dont think thats the answer caus the gas would have lost just as much heat expanding when it entered as it gained again because of the compression
I think I have an explanation for the end, which is in line with your explanation, Hydraulic Press Action. The temperature raise could be caused by the compression of air inside, and air inside may include the air coming in. The air coming in expands, so it cools down, and starts whirling in chamber. Walls help heat up that cold air, so in net, the incoming air gets plus heat energy during the process. Once enough air come in and pressure restored, it will result as an elevated temperature.
The air was hotter than when you started for a similar reason as rubber heating up when stretched, the molecules rub together which generates tiny amounts of friction. Another TH-camr used this to make a working (but terribly inefficient) refrigerator powered by rubber bands, having a hand crank that stretched rubber bands to hear them up and a small fan to blow air past them as they relaxed and lost heat.
I think the temperature started rising from the vacuum because of the ambient temperature of the room coming through the walls. Since as you explained the radiation being pulled away by the vacuum that's what was happening. Not so much the thermometer itself. Also for the increase in temperature when filling the vacuum, the thermometer doesn't know it's in a vacuum so when the air pressure is introduced it adds that temperature ontop of what it is already reading until pressure equalizes making the temperature hold steady.
will condensation occur from a metal radiator in a vacuum chamber if a cold enough liquid is pumped through it from outside the chamber? will there be a difference in the temperature required for the liquid to create condensation?
Would love to see the different effects of radiators on a CPU in a vacuum.
Removing heat is a huge problem in space.
could you do the same test but put the vacuum chamber in a freezer ,then maybe suject it to a higher heat;good video.
you should try some high pressure chamber stuff!
What is the torr that you pump down to? And do you use a low, medium or high level vacuum pump?
Shouldn't the vacuum chamber be blacked out and not transparent? Doesn't light going through the glass give it some heat ?
i am starting to like you keep up bro,
It's thermodynamics you need to do compression and reverse infinitely slow to reach that same temp it's related to entropy
How heavy is air? Measure by weighing vacuum before and then after and get a different result then subtract both numbers from before and after. I’m wondering so much now plz answer
Please show us how to make a vacuum chamber. Thank you🙏
Please, correct me if I am wrong. When you put a conventional thermometer in a vacuum chamber (or in space), what you are measuring it’s not the vacuum, but the temperature of the thermometer itself. In a vacuum, the atoms of the thermometer are still moving and vibrating, so it’s basically impossible to measure the temperature of a vacuum with a conventional thermometer. In theory, if all the atoms of an object had to stop vibrating, they would reach the lowest temperature possible, known as the Zero Kelvin, which translated in a celsius scale would be −273.15 °C. Since conventional thermometers can't work in space, astronomers measure the temperature of objects by examining the light emitted. Redder objects are colder, bluer objects are hotter.
So on that definition of space, space is cold and hot. Photons define the temperature. Regardless, there is no oxygen so we can not float around space without suits =) It really is the most extreme environment. Love the video.
Once it is impossible to make a perfect vacuum, will there be always some gas left to transfer heat from the walls of your chamber to the thermometer, and there is also IR radiation that will also transfer heat to the thermometer
im curious what would happen if you spin a levitating magnetic top in a vacuum? how long will it spin?
I been wanting to cast flowers in resin or acrylic to last as long as possible for a collection. Would you try filling a bowl with casting resin putting in a bloomed flower, vac out the air and see if the flower will absorb the resin, harden and last a lifetime( or at least a few years) Hope you find this interesting
When it's vacuum, what does the thermometre reading mean? I think it measures its own temperature. But how wud we measure the temperature of the vacuum ?
The definition of space temperature is quite abstract.
You might know something called “Cosmic Microwave Background” or CMB.
The light has been emitted by matter since the beginning of time or the Big Bang, and after billion years, the wavelength stresses as space expands causing a drop in frequency.
And in thermal spectrum, we say that thermal spectrum the temperature of the universe, and it is only a few degree Kelvins, “very cold”.
But remember, telling temperature standard by wavelength doesn’t mean the source has to be the same temperature as the radiation it emitted.
Since the wavelength has been expanded due to the expansion of space, we get lower and lower frequency light, but those frequencies doesn’t mean space has a temperature.
do this test again and then point a lazer at the needle
also I have a question...can you please put a piece of cynder block in your chamber. I was told that with out oxyen the block would disintegrate. ...please and thank you
If you freeze something with liquid nitrogen in a vacuum, is there any condensation? I would think not but would love to see this! I ask because I'm wondering if you can build a computer in a vacuum and Sub-Zero cool it without worrying about condensation. Thanks!
Hello. I would like to know where you got your clear vacuum chamber from?
You should have directed an outside incandescent spotlight on the thermometer and demonstrated radiated heat transfer.