In B&W film, what happens is a photon hits the paper and causes a chemical reaction in the silver atoms that makes them turn dark after more chemicals (developer) are applied to them. In a CCD the photon knocks an electron off of the atoms in the material, and a moving electron == current.
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timeasmymeasure
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Date: 2007-08-16 02:18 pm (UTC)In B&W film, what happens is a photon hits the paper and causes a chemical reaction in the silver atoms that makes them turn dark after more chemicals (developer) are applied to them. In a CCD the photon knocks an electron off of the atoms in the material, and a moving electron == current.