7 modern technology examples that don’t need electricity

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Electricity is essential to our daily lives, but some modern technologies do not require electricity to function. These technologies rely on other energy sources such as mechanical, solar and kinetic energy to operate. In this article, learn how 7 modern technology examples work without electricity.

solar calculator

A classic example of technology that does not require electricity is a solar-powered calculator. These calculators run on solar cells that convert sunlight into electricity. Calculators can usually be powered in low light thanks to solar cells built into the calculator display. Solar-powered calculators are often used outdoors where access to electricity is limited.

mechanical watch

Mechanical watches rely on the energy produced by the mainspring being wound. Due to their accuracy and longevity, mechanical watches have been around for centuries and are still widely used today.

The watch movement is powered by winding a mainspring that stores energy released when the mainspring unwinds. The quality of a mechanical movement is influenced by the design of the watch and the talent of the watchmaker, and determines the accuracy of the watch.

wind-up radio

Another example of technology that does not require a connection to a power source is a wind-up radio. These radios are powered by a hand-cranked spring mechanism that powers a small generator to produce electricity. The radio’s circuits and speakers are driven by the generated electricity. Wind-up radios are often used in emergencies and where access to energy may be restricted.

hydraulic clock

A water clock is a rare technology that does not require electricity. These watches are powered by the energy produced by the movement of water. The ancient Greeks developed the first water-powered clocks that were widely used in medieval Europe.

The weight of the clock and the float are connected with a cable to move it. The weight moves the clock and the float controls the flow of water to keep the clock accurate.

bicycle generator

Bicycle generators are a rare example of technology that does not require connection to a power output. These generators are powered by pedaling the bicycle, which drives small generators to produce electricity.

The electricity produced can power a variety of devices such as lights, fans, and radios. Bicycle generators are frequently used in isolated locations or situations where access to electricity may be limited.

handheld flashlight

A hand crank uses a hand crank to generate electricity to power the flashlight. A small battery that stores the generated power powers the flashlight’s LED bulb. Hand-cranked flashlights are frequently used in emergencies and where access to electricity may be lacking.

gravity ramp

Gravity lighting is the only technology that does not require electricity. In these lights, gravity powers an LED light source that can produce up to 20 minutes of light per cycle. The generator that charges the battery is powered by a weighted cord pulled by the lamp.

The energy stored in the battery then powers the LED bulb. Gravity ramps are useful in places where access to electricity may be limited, such as in rural villages or during power outages.