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What Does a Fan Do in a Vacuum Chamber? Weird Results

Mar 15, 2024
Well everyone, today we are going to test

what

happens to a fan in a

vacuum

chamber

. Can he still blow things? This has been one of my most requested videos and I haven't done it yet so I decided to grab it. the application and see

what

two things happen in a

vacuum

chamber

when there is a fan blowing on them, okay, so I have my fan connected here and I can adjust the speed, turn it on here and turn it down, so first let's see what this looks like like at atmospheric pressure with these styrofoam beads here these are going to get everywhere okay here we go okay let's turn on our fan so this is with air let's see how it looks so I'm going to change it to 3 volts that's it the operating voltage of this fan here so let's turn it up to 3 volts 3 2 1 it's like a snow machine so cool you can see it sucking the beads in at the bottom and then blowing on them okay let's leave it like that and turn it on. our vacuum and see how it changes, the vacuum increases, okay, here we go, okay, 3 2 1, okay, they're already slowing down, they're still flying around because they're static, they're actually getting, oh, there they go, okay , so now the movement has stopped there, there are no beads flying, let's increase the voltage a little, see if we spin it much faster, if we have beads flying again, this is not a perfect vacuum, at least there are still small amounts of air here.
what does a fan do in a vacuum chamber weird results
There's less than 0.01 atmospheres in there, so there's a little bit of air, let's see if I can turn the fan up really high and get some beads to blow, I can already see them spinning there, okay, so you can see it even on my vacuum cleaner. camera, if we turn the fan up to an extremely high level, I don't have any, I don't know how many revolutions per minute it was doing, but I overshot it, it's supposed to be around three volts, I think it got to 17 volts before it finally blew up . but you can see that if you turn it up a lot you can get enough drag on those balls to lift them up and make them spin and also once one of them starts moving then it's kind of a cascading effect because it hits others and it's not just the moving air, but the fans hitting the balls so you can see, that's the reason why I'm planets like Mars, you can still have wind if you remember the movie The Martian, remember that on Mars?
what does a fan do in a vacuum chamber weird results

More Interesting Facts About,

what does a fan do in a vacuum chamber weird results...

There was a wind storm that practically brought down their ship, so although Mars has a vacuum compared to Earth, it actually has a very thin atmosphere, about 610 Pascal, which is actually a little higher pressure than was achieving in my vacuum chamber here, so my vacuum was even able to reach a lower pressure than the pressure on Mars, but you could still see that we could form a certain amount of wind just because this is not a perfect vacuum, but something with thinner atmospheres, if you want to get something. To move or have lift in the thinner atmosphere you need a much higher speed, this is because the drag coefficient increases as the square of the speed.
what does a fan do in a vacuum chamber weird results
Now, if you want to reduce the pressure than we have achieved here, you need a special vacuum pump called a molecular turbo. pump now, these pumps only work once you've pumped everything to an extremely low pressure and then you turn on the turbo molecular pump and basically how this pump works is that it literally just hits the atoms underneath it which makes a turbo molecular pump is almost like a jet engine it has stages where these fans spin extremely fast and they are at an angle so that when they hit an air molecule they knock it down at an angle and then the next blade catches it and knocks it down and knocks it down and pushes it to the other end with these turbo molecular bombs, it can get to about negative 10 to 9 Pascals, which is an extremely low pressure and thanks for watching another episode of action lab.
what does a fan do in a vacuum chamber weird results
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