Whereas electrical energy is an integral a part of our day by day lives, some fashionable applied sciences don’t require electrical energy to operate. These applied sciences depend on different vitality sources, akin to mechanical vitality, photo voltaic vitality, or kinetic vitality, to function. On this article, learn the way seven fashionable expertise examples work with out electrical energy.
Photo voltaic-powered calculators
One typical occasion of expertise that doesn’t require electrical energy is solar-powered calculators. These calculators are run on photo voltaic cells, which remodel sunshine into electrical energy. The calculator could 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 continuously used outside, with restricted entry to electrical energy.
Photo voltaic-powered calculators launched the general public to inexperienced vitality a few years in the past: https://t.co/W2aza1LJtt
— Nationwide Geographic (@NatGeo) February 26, 2016
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 immediately.
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 will probably be.
One other instance of expertise 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 areas with doubtlessly restricted entry to vitality.
In Sudan, @unamidnews has distributed photo voltaic wind-up radios to weak communities, serving to them entry life-saving info.
— United Nations (@UN) January 30, 2020
Clocks working on water are a uncommon expertise 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 load and float of the clock are linked by way of a cable to function it. The load strikes the clock, whereas the float controls the water circulation to maintain the timepiece correct.
Bicycle-powered mills are an uncommon instance of expertise 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 supply electrical energy.
That is the place all of it actually began: Soichiro Honda’s first bike in 1946, a bicycle powered by WW2 navy generator. Referred to as the Putt Putt pic.twitter.com/KfwJfwPlMh
— Mat Oxley (@matoxley) October 14, 2016
The generated electrical energy can energy varied units, together with lights, followers and radios. Bicycle-powered mills are continuously utilized in remoted areas or conditions the place electrical energy entry could also be restricted.
Hand-cranked flashlights use the hand crank to supply 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 continuously utilized in emergencies or locations the place entry to electrical energy could also be scarce.
One-of-a variety expertise 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 costs a battery is powered by the weighted twine that the lamp pulls.
1⃣ I attempt to sustain with environmentally preferable merchandise tech, however this one was new to me: gravity-powered lamps.
They’re notably fitted to off-grid areas the place it could be tough to make use of a (less expensive!) solar-powered lamp.
— Ronald Steenblik (@RonSteenblik) March 4, 2022
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, akin to in rural villages or throughout energy outages.