Simple Science - digest experiments # 38

Smoke in a glass

Experience shows the result of a chemical reaction percentage of 25% ammonia solution and concentrated hydrochloric acid.
NH3 + HCl = NH4Cl

electrochromic film < br />
An electrochromic film is a two layer film with an inner conductive layer and a liquid crystal substrate. Off the crystals are arranged randomly, forming an opaque white-matte surface, scattering the transmitted light. When voltage is applied immediately to stabilize the crystals, the film becomes transparent and allows light.

Specifications of the film: 90-110V power, current 0, 1 A / m2, capacity - 7 W / m2, the switching speed - less than 1 sec., The transparency of 7-75%, the resource switching more than 100 thousand. Times, operating temperature range from - 40 ° C to + 75 ° C.

Wire memory

This experience of our audience. Each following video he gets better and better, I recommend anyone interested to subscribe.

Video from filming the program "EXperimenty" Science Channel 2.0

The program has not aired on TV, it's working papers from the shooting. As for the sensations inside the vacuum packing, I can say that it is better to try once than a hundred times to see. When you compress the package starts, but complete immobilization, is added a sense of fear.

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Source: geektimes.ru/company/gtv/blog/242446/