NightHawkInLight | How to Make a Vacuum Cannon @Nighthawkinlight | Uploaded 11 years ago | Updated 12 hours ago
To learn how I made the vacuum pump used to operate this cannon, take a look at this video: http://youtu.be/UkPLu6mgdWA
A vacuum cannon is an interesting physics demonstration that shows how much atmospheric pressure there is at the earths surface, though we do not feel it because our bodies have the same amount of pressure both inside and out. By removing air pressure from inside of a length of pipe the balance with atmospheric pressure is removed, and if the seal is broken on one end air pressure will rush in quickly enough to throw a projectile with a good deal of force.
I first learned of vacuum cannons thanks to this article on Instructables: http://www.instructables.com/id/Vacuum-Cannon-drives-ping-pong-ball-at-supersonic- #NightHawkInLight
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Check out my latest video: "How To View Invisible Air Currents With Lasers"
youtube.com/watch?v=K94Cc21KEIA
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To learn how I made the vacuum pump used to operate this cannon, take a look at this video: http://youtu.be/UkPLu6mgdWA
A vacuum cannon is an interesting physics demonstration that shows how much atmospheric pressure there is at the earths surface, though we do not feel it because our bodies have the same amount of pressure both inside and out. By removing air pressure from inside of a length of pipe the balance with atmospheric pressure is removed, and if the seal is broken on one end air pressure will rush in quickly enough to throw a projectile with a good deal of force.
I first learned of vacuum cannons thanks to this article on Instructables: http://www.instructables.com/id/Vacuum-Cannon-drives-ping-pong-ball-at-supersonic- #NightHawkInLight
-~-~~-~~~-~~-~-
Check out my latest video: "How To View Invisible Air Currents With Lasers"
youtube.com/watch?v=K94Cc21KEIA
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![How To Make Rope From Grass [Easy Method] - NightHawkInLight](https://i.ytimg.com/vi/DljWyRQFrNc/hqdefault.jpg "How To Make Rope From Grass [Easy Method] - NightHawkInLight
Rope is one of the most valuable items to have in the wilderness, and this ancient method of creating it produces very good results. Even today some commercially made ropes are wound with the same process. Other natural fibers can be used to create rope (some being much stronger than grass), and this method will work equally as well with any other flexible material. Grass does tend to become brittle when dry which could weaken this rope, but even then it does maintain some strength. In moderate humidity weakness from drying should not become an issue at all.
Note that for best results, each of the two tails of the rope should be twisted an equal number of turns as theyre wound. That will ensure that the two coils wind around one another tightly and in a double helix pattern. If one side is twisted less than the other it will tend to stay straight, while the more twisted side coils around it like a spring. When I first started winding the rope in the video you can see I didnt do a very good job twisting both strands evenly for the first few inches, and one side was coiled more than the other. Try to avoid that, as it will be a weak point.
If you would like to support my videos on Patreon it would be greatly appreciated! You can view my page and make a pledge here: https://www.patreon.com/NightHawkProjects?ty=h
#NightHawkInLight
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Check out my latest video: How To View Invisible Air Currents With Lasers
https://www.youtube.com/watch?v=K94Cc21KEIA
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