From There I Fixed It: Kelvin Doe Built a Radio Transmitter From Parts He Found in the Garbage…

… when he was 15…

Not only that, the engineering prodigy from Sierra Leone once built a battery out of scrap metal, baking soda and acid to power his family’s house. Yep, he is a kludge god in the purest sense of the term. Uproxx called him a teenage Tony Stark, and we’d be inclined to agree. I’d also like to add this request:

Get. This. Kid. A. Scholarship. MIT, Cal-Tech, Harvey Mudd, Olin, anywhere. Step up!

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Unknown (via Uproxx)

from There I Fixed It

From Engadget: Scientists use nanotechnology to harvest electricity from temperature fluctuations

Scientists use nanotechnology to harvest electricity from temperature fluctuations

So far your footsteps, breath and nervous energy have all been tapped to charge up batteries, and now researchers from the Georgia Institute of Technology scientists have pulled it off using thermal changes. They did it with so-called pyroelectric nanogenerators, which use polarization changes to harvest heat energy from temperature fluctuations. Normally output current is too low for commercial electronics, but by making one with lead zirconate titanate (PZT), the team was able to create a device that could charge a Li-ion coin battery to power a green LED for a few seconds. The researchers predict that by doubling the surface area, they could drive wireless sensors or LCDs using only environmental temperature changes from an engine or water pipe, for instance. The result could be green power, but without all that pesky moving around.

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Via: Phys Org

Source: Nano Letters

from Engadget