The Power of the Hand Crank Flashlight

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The Power of the Hand Crank Flashlight
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The hand crank flashlight is beneficial and very
useful.
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They are also incredible safety devices, with
many offering light at any time.
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This type of flashlight comes in handy in
special or demanding situations, such as when
your batteries die, because a hand crank
flashlight can take the energy of the user to
power the flashlight or other functions of the
device.
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How the Hand Crank Flashlight Started
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Hand crank flashlights are not a new invention.
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Michael Faraday discovered the concept upon
which they operate during his research into
electromagnetic induction in the 1820s.
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Faraday found that by wrapping two insulated
coils of wire around an iron ring and applying an
electric current to one of the coils a brief
current passed through the second coil.
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Later he found that if he moved a magnet through
a loop of wire an electric current passed through
the wire as well and that the current passed if
the loop travelled over an immobile magnet.
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His work revealed that a dynamic magnetic field
creates an electric field.
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This knowledge helped build the first electric
generator in 1832.
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The Parts of the Hand Crank Flashlight
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Two vital parts must exist in order for a hand
crank to operate successfully, a static part to
provide a continuous magnetic field and a set of
rotational windings able to rotate 360 inside of
the field.
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On hand crank flashlights, a permanent magnet
provides the constant magnetic field and a handle
or even shaking the flashlight creates the charge.
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Without one of these two objects, in these
circumstances, it is impossible to create the
necessary electric field to generate the power
required to power the light bulb of the
flashlight.
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Hand Crank Flashlight and the Environment
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In our world today, it seems that everyone wants
to be more environmentally friendly, find
renewable energy sources, save money and simplify
his or her lives.
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The hand crank flashlight seems to fit perfectly
into our current desires during this modern time,
but this technology is almost two hundred years
old.