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What function, besides their direct purpose, did theatrical fans perform? Detailed answer

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What function, besides their direct purpose, did theatrical fans perform?

Among the whole variety of fans, there were special theatrical fans, which, in addition to their direct purpose, served as an assistant. Scenes from the performance, programs of performances, excerpts from plays were applied to the fans for the audience. And the actresses sometimes wrote down hard-to-remember texts on their fans.

Authors: Jimmy Wales, Larry Sanger

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What were military armored tires?

It is known that in the wars of the 19th century, as well as the First and Second World Wars, many countries used armored trains. However, in addition to this, they tried to fight with the help of individual combat units - armored rubber. They were almost like tanks, but limited in movement only by rails.

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American scientists have invented a rubber deformable pump that mimics animal biology and can serve as a "heart" for robots made of soft materials.

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