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7 modern technology examples that don’t need electricity

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Whereas electrical energy is an integral a part of our day by day lives, some fashionable applied sciences don’t require electrical energy to perform. These applied sciences depend on different vitality sources, comparable to mechanical vitality, photo voltaic vitality, or kinetic vitality, to function. On this article, learn the way seven fashionable know-how examples work with out electrical energy.

Photo voltaic-powered calculators

One typical occasion of know-how that doesn’t require electrical energy is solar-powered calculators. These calculators are run on photo voltaic cells, which rework sunshine into electrical energy. The calculator might be powered in low gentle due to the photo voltaic cells, that are usually built-in into the calculator’s show. Calculators powered by photo voltaic vitality are ceaselessly used outside, with restricted entry to electrical energy.

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Mechanical watches

Mechanical watches depend on the vitality produced by a wound spring. Due to their precision and longevity, mechanical watches have been used for hundreds of years and are nonetheless extensively used right now.

The watch’s motion is pushed by winding the spring, which shops the vitality launched when the spring unwinds. The mechanical motion’s high quality, influenced by the watch’s design and the watchmaker’s expertise, determines how correct the timepiece can be.

Wind-up radios

One other instance of know-how that doesn’t require a connection to an electrical energy supply is a wind-up radio. These radios are powered by a hand-cranked spring mechanism that powers a tiny generator to generate electrical energy. The radio’s circuitry and audio system are powered by the electrical energy produced. Wind-up radios are sometimes employed in emergencies or places with doubtlessly restricted entry to vitality.

Water-powered clocks

Clocks working on water are a uncommon know-how that doesn’t want electrical energy. These clocks are powered by the vitality created by the motion of water. The traditional Greeks developed the primary water-powered clocks extensively utilized in medieval Europe.

The burden and float of the clock are linked through a cable to function it. The burden strikes the clock, whereas the float controls the water circulate to maintain the timepiece correct.

Bicycle-powered mills

Bicycle-powered mills are an uncommon instance of know-how that doesn’t require a connection to an electrical energy output. These mills are powered by pedaling a bicycle, which drives a small generator to provide electrical energy.

The generated electrical energy can energy numerous units, together with lights, followers and radios. Bicycle-powered mills are ceaselessly utilized in remoted places or conditions the place electrical energy entry could also be restricted.

Hand-cranked flashlights

Hand-cranked flashlights use the hand crank to provide electrical energy, which powers the flashlight. The little battery that shops the generated electrical energy powers the flashlight’s LED bulb. Hand-cranked flashlights are ceaselessly utilized in emergencies or locations the place entry to electrical energy could also be scarce.

Gravity-powered lamps

One-of-a variety know-how that doesn’t require electrical energy is gravity-powered lighting. In these lights, gravity powers an LED gentle supply that may produce as much as 20 minutes of sunshine per cycle. A generator that expenses a battery is powered by the weighted wire that the lamp pulls.

The battery’s saved vitality then powers the LED bulb. Gravity-powered lamps are helpful in locations the place entry to electrical energy could also be constrained, comparable to in rural villages or throughout energy outages.