The video features a series of experiments using liquid nitrogen. The hosts start by demonstrating the effects of liquid nitrogen on various objects, including a dishwashing sponge, a jumper, a bag of chips, an incandescent light bulb, a stretchy substance called "Stretch Armstrong," a waterproof match, and a radio-controlled car. They also test the effects of liquid nitrogen on a hand made of gelatin, which instantly freezes and becomes brittle.
The hosts then discuss the dangers of putting a human hand in liquid nitrogen and how to protect it. They conduct an experiment using mittens to create a barrier between the hand and the liquid nitrogen. It takes seven mittens to successfully protect the hand from the extreme cold.
In another experiment, the host enters a capsule filled with liquid nitrogen, wearing only shorts, to experience the extreme cold. The temperature in the capsule reaches -160 degrees Celsius.
Throughout the video, the hosts emphasize the dangers of working with liquid nitrogen and caution viewers not to try the experiments at home.
Here are the key facts extracted from the text:
1. The temperature of liquid nitrogen is minus 196 degrees.
2. A dishwashing sponge becomes hard when placed in liquid nitrogen.
3. A gelatin hand was created to test the effects of liquid nitrogen on a human hand.
4. The gelatin hand turned white and became brittle after being placed in liquid nitrogen for five seconds.
5. A hunting match that is hip and waterproof can be extinguished by liquid nitrogen.
6. A radio-controlled car can still function after being placed in liquid nitrogen, but its engine will eventually freeze.
7. An expander, a device used to pump the forearm, will burst when hit with a hammer after being cooled with liquid nitrogen.
8. A person can safely enter a capsule cooled with liquid nitrogen to a temperature of minus 160 degrees for a short period of time.
9. The capsule is filled with liquid nitrogen, which cools the air inside to a very low temperature.
10. A person's skin can withstand the cold temperature for a short period of time, but prolonged exposure can cause frostbite and other injuries.
11. Seven mittens are needed to create a barrier to protect a hand from liquid nitrogen.
12. The mittens must be worn for a short period of time, around 10 seconds, to prevent frostbite and other injuries.
13. The experiment was conducted to test the effects of liquid nitrogen on a human hand and to find a way to protect the hand from the extreme cold.
14. The results of the experiment showed that seven mittens are sufficient to protect a hand from liquid nitrogen for a short period of time.