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 metal, "are all alike destructively acted upon during the hours of sunshine, and, but for provisions of Nature no less wonderful, would soon perish under the delicate touch of the most subtile of the agencies of the universe.".    From Wordnik.com.  [Harvard Classics Volume 28 Essays English and American] Reference

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 alike destructively acted upon during the hours of sunshine, and, but for provisions of.    From Wordnik.com.  [Walking] Reference

Light or luminous power to one portion; heat or calorific power to another; and chemical power or actinism to a third.    From Wordnik.com.  [The Art of Living in Australia ; together with three hundred Australian cookery recipes and accessory kitchen information by Mrs. H. Wicken] Reference

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, analyzed and measured.    From Wordnik.com.  [Scientific American Supplement, No. 288, July 9, 1881] Reference

Meanwhile, two or three interesting investigations naturally suggest themselves; to determine, for instance, the relative actinism of blue sky, haze, and clouds; also, the relative exposures proper to give at different hours of the day, at different seasons of the year, and in different countries.    From Wordnik.com.  [Scientific American Supplement, No. 520, December 19, 1885] Reference

It is the centre from which an inconceivable amount of force in the shape of light, heat, actinism, and probably other manifestations, is hourly poured forth.    From Wordnik.com.  [Story of Creation as Told By Theology and By Science] Reference

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 metal, “are all alike destructively acted upon during the hours of sunshine, and, but for provisions of Nature no less wonderful, would soon perish under the delicate touch of the most subtile of the agencies of the universe.    From Wordnik.com.  [Walking [1862]] Reference

N. - chemical study of actinism; photo-chemistry.    From Wordnik.com.  [xml's Blinklist.com] Reference

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 metal, "are all alike destructively acted upon during the hours of sunshine, and, but for provisions of Nature no less wonderful, would soon perish under the delicate touch of the most subtile of the agencies of the universe.".    From Wordnik.com.  [Excursions] Reference

Niepce, 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 metal, “are all alike destructively acted upon during the hours of sunshine, and, but for provisions of Nature no less wonderful, would soon perish under the delicate touch of the most subtile of the agencies of the universe.    From Wordnik.com.  [Walking] Reference