The geranium: Nature's camera.
January 20, 2002 3:00 AM Subscribe
The geranium: Nature's camera. The sensitivity of certain silver salts to light was known from about 1727, when Johann Heinrich Schulze published his findings in the Nuremburg Academy of Natural Philosophers. But many natural things are sensitive to light. Long ago people noticed the effect of light on green plants, or how it made coloured fabrics fade. It is the effect of light on plants that makes Roman Photography possible. [via bifurcated rivets]
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