Scientific American, 6.6.1863
When a piece of silk is dipped into a solution of the nitrate of silver, and then exposed wet to a current of hydrogen gas, the nitrate is reduced, and the silk is covered with a coating of silver.
Coloriasto on väriaiheisten tekstien (ja kuvien) verkkoarkisto
(Archive for colour themed articles and images)
INDEX: coloriasto.net
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