7 modern technology examples that don’t need electricity

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.

Solar-powered calculators

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.

Solar-powered calculators introduced the public to green energy many years ago: https://t.co/W2aza1LJtt

— National Geographic (@NatGeo) February 26, 2016

Mechanical watches

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.

Wind-up radios

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.

In Sudan, @unamidnews has distributed solar wind-up radios to vulnerable communities, helping them access life-saving information.

More on the work of the mission in Darfur: https://t.co/YAkK3EfoTK pic.twitter.com/TnTOha7fOK

— United Nations (@UN) January 30, 2020

Water-powered clocks

Clocks running on water are a rare technology that doesn’t need electricity. These clocks are powered by the energy created by the movement of water. The ancient Greeks developed the first water-powered clocks widely used in medieval Europe.

The weight and float of the clock are connected via a cable to operate it. The weight moves the clock, while the float controls the water…