7 modern technology examples that don’t need electricity

cointelegraph.com:

While electricity is an integral part of our daily lives, some modern technologies do not require electricity to function. These technologies rely on other energy sources, such as mechanical energy, solar energy, or kinetic energy, to operate. In this article, learn how seven modern technology examples work without electricity.

One typical instance of technology that does not require electricity is solar-powered calculators. These calculators are run on solar cells, which transform sunshine into electricity. The calculator can be powered in low light thanks to the solar cells, which are typically integrated into the calculator’s display. Calculators powered by solar energy are frequently used outdoors, with restricted access to electricity.

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Mechanical watches rely on the energy produced by a wound spring. Because of their precision and longevity, mechanical watches have been used for centuries and are still widely used today.

The watch’s movement is driven by winding the spring, which stores the energy released when the spring unwinds. The mechanical movement’s quality, influenced by the watch’s design and the watchmaker’s talent, determines how accurate the timepiece will be.

Another example of technology that does not require a connection to an electric power source is a wind-up radio. These radios are powered by a hand-cranked spring mechanism that powers a tiny generator to generate electricity. The radio’s circuitry and speakers are powered by the electricity produced. Wind-up radios are often employed in emergencies or locations with potentially restricted access to energy.

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