All posts under: How

How do flash memory cards work?

Flash memory cards consist of large numbers of individual cells, each of which contains a set of transistors. Under normal circumstances, current flows between the transistors and into a drain. When a …

How do satellites work?

Satellites are communications systems that use transponders, receivers and radio signals to communicate with astronauts and scientists on earth. Long before satellites enter orbit, they must be designed to withstand the pressures …

How do you listen through walls?

Although sophisticated spying technology is available for purchase that uses contact microphones and amplifiers to listen through walls, it’s also possible to create a listening mechanism using a small drill and plastic …

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