Solar energy / Solar photovoltaics / Photovoltaic effect (3D animation)

Solar energy / Solar photovoltaics / Photovoltaic effect (3D animation)

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This video puts the complexity of solar energy and solar cells into plain English.

Associate Professor of Materials Science and Engineering Jeff Grossman explains photovoltaics/solar cells.

Video: Emily Heusted

25 thoughts on “Solar energy / Solar photovoltaics / Photovoltaic effect (3D animation)”

  1. The most effective solar panels, although great, are only capturing less than a tenth of what they could be attaining from basking in the sun's output of the EM spectrum. Even if photovoltaic cells could absorb 99.9% of the electromagnetic energy they're bathing in, it would be a small dispersed fraction of the sun's energy. This is because the cell is covering a speck of the suns 129,600 degrees of directional output; I'm no math wiz, so someone correct me if I'm wrong, but the sun is roughly a sphere and a circle is 360 degrees so add the third dimension and 360X360 be the directional coverage of a sphere right? I think 3D objects use a different mathematic media to describe what I'm talking about, but I haven't learnt such math yet, or didn't understand it if I have, but I digress.

     About that directional output I was referring to, if you start to draw 360 lines from a point using a protractor you'll see that the space between the lines becomes greater as the lines get further out. This can give you a numeric understanding as to why the suns radiation becomes less dense or concentrated as you get further out without being a physicist. In conclusion, if you want to get the most energy out of the sun you'd need to get as close to it as possible and build something like a Dyson Sphere. However, this would far exceed our power needs.

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  2. can u tell me ,why only solar light is used to generate the power.i mean why the light coming from household bulb is not used

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  3. can you tell me, what aplikasi you use to make this video. especially at the house part.
    sorry because my english is bad.

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  4. Excellent! Would you allow me to translate it into Portuguese? If so, please adjust the settings to enable translations. Anyway, thanks for sharing.

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