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{%type%} Definitions

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Short "hint"

n. - The property of radiation that enables it to produce photochemical effects.

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Usage examples (10)
  • Niépce, a Frenchman, discovered "actinism," that power in the sun's rays which produces a chemical effect; that granite rocks, and stone structures, and statues of...
  • Frenchman, discovered "actinism," that power in the sun's rays which produces a chemical effect; that granite rocks, and stone structures, and statues of metal "are all...
  • Light or luminous power to one portion; heat or calorific power to another; and chemical power or actinism to a third.
  • The mechanism must be sensitive, as such properties of matter as heat, light, electricity, magnetism, and actinism, are to be handled, caused to vanish and reappear,...
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