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This was discovered where there was no electric due to the earthquake. This can be used without any batteries or recharging it whenever the battery is low. It is powered by the muscle power of the user and it has many types.
Wiki User
∙ 10y ago
Wiki User
∙ 10y agoWhat is special about a hand crank flashlight is that it doesn't need batteries. To make it work one has to crank a level all the time to keep the light shining.
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How does a dynamo flashlight work?
A dynamo flashlight works by producing its own electricity. The flashlight has a crank that is turned by the operator. The crank runs a small generator inside that produces enough electric to run the flashlight.
What are some advantages to a flashlight?
Answers:it shines very bright in the night especially
What converts motion into light?
Hand crank flashlight
How does a rechargeable torch work?
Crank flashlights are very handy devices that are particularly useful in a pinch. No need to worry about charging the flashlight or ensuring it has fresh batteries, the crank flashlight is a great last resort and will always light up your campsite when you need it.GeneratorThe crank flashlight contains a small generator much like the ones that are used to provide electricity around the country. The difference is that the flashlight's generator, also called a dynamo, is powered by manual cranking of the arm.InductionThe principal behind the generator is that of induction. When you move a coil of wire through a magnetic field, a voltage is induced into the wire, which then creates electrical current that flows through the circuit. Inside your crank-powered flashlight is a wire coil that is inside a magnetic field. When you crank the arm of the flashlight, you are actually moving this coil in the magnetic field. As the coil moves, voltage is induced and current then flows through the circuitry and lights the bulb of the flashlight.BatteriesYou've probably noticed that you can crank your flashlight for a few minutes and then get a reliable light source for a while afterward without actively cranking. This is because the crank flashlight has rechargeable battery cells inside that store the energy that you've created from cranking. In this way you don't have to actively crank to use the flashlight, but can crank and then have the flashlight operate on batteries.Read more: How Does a Crank Flashlight Work? | eHow.com http://www.ehow.com/how-does_4911443_crank-flashlight-work.html#ixzz1Xz4cG0feELEPHANT!
What does a crank flashlight look like?
its ur own type
What is winding up?
A mechanically powered flashlight , such as those with crank handles.
What type of energy does a crank flashlight go through. mechanical or thermal?
"Go through"? The process of charging and using a crank flashlight includes the existence of thermal, mechanical, electromagnetic, sound and radiation energy.
What is a wind-up torch?
A mechanically powered flashlight , such as those with crank handles.
Who invented the hand crank flashlight?
Darryl Barton and Elliot Reed joined forces and built this magnificent beast
What are some of the uses of LED?
They are used in crank-lever flashlights (the ones that can be charged up by cranking a lever on the back of the flashlight), and other various forms of environmentally friendly lighting, such as a nightlight, or a room light
What is the function of a bulb in a flashlight?
The function of the bulb in a flashlight is to generate some light when some electrical current passes through it. Note: That's actually the whole purpose of the flashlight. If there were no part of it that generated any light, then you do just as well without the flashlight altogether.
How is the function of the flashlight?
The main function is mobile lighting. Some flashlight can do more than regular flashlight. Imalent flashlight can be adjusted by touch screen, and has red floodlight and UV light for different applications.
