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Free minder
Join Date: Nov 2001
Location: Middlessex county, MA
Posts: 9,407
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Here is an idea: buy a little solar cell at radioshack, and a set of colored slides. Put each slide in front of the cell, and measure the current of the cell for each color, using a light bulb as source. Look for a the wavelength corresponding to each color online (rainbow chart). Then plot current vs wavelength. If you want to show that absorption varies with wavelength, repeat same experiment with 2 and 3 layers of each slide.
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1978 SC Targa, DC15 cams, 9.3:1 cr, backdated heat, sport exhaust https://1978sctarga.car.blog/
2014 Cayenne platinum edition
2008 Benz C300 (wife’s)
2010 Honda Civic LX (daughter’s)
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