The first permanent photograph was made in 1826 by Joseph Nicéphore Niépce, building on a discovery by Johann Heinrich Schultz (1724): a silver and chalk mixture darkens under exposure to light.
1724年，约翰·海因里希·舒尔茨发现银和白垩的混合物见光后会变黑。
The first permanent photograph was made in 1826 by Joseph Nicéphore Niépce, building on a discovery by Johann Heinrich Schultz (1724): a silver and chalk mixture darkens under exposure to light.
1724年，约翰·海因里希·舒尔茨发现银和白垩的混合物见光后会变黑。
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