Solar MP3 Charger

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A solar MP3 charger is a small scale use for solar power, which really takes advantage of one of the power source’s great strengths: scalability. Most forms of power have a low end threshold beyond which they are impractical to implement, as well as an upper bound beyond which they are difficult to control. Solar power’s first earthbound application was found in a tiny panel used to power calculators, illustrating that it is scalable very far in the downward direction.

Compare the possibilities of a solar MP3 charger, which you can carry with you, with those afforded by other alternative energy sources. Wind power is unwieldy to attempt to make mobile, because the energy is derived from having a fixed point past which the air flows. Hydroelectric power is even more difficult to transport, because water is heavy, and in order to generate power with it you need a vertical drop through which you can put the water in order to harness its potential energy.

Neither of those options is attractive when you picture yourself out backpacking, hiking, skiing, or even on a trip to the beach. By comparison, a solar MP3 charger is small, lightweight, and eminently portable. In essence, it is everything that they are not, in addition to still being a clean source of power.

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