Paris: Gauthier-Villars, 1903. Hardcover. First Edition. 1782 pp. 4to. Paper covered boards with brown leather spine with gold embossed tilting, minor chipping to head and foot of spine. Very clean within. Text in French. Very Good.
In 1903, Pierre Curie and his laboratory assistant Albert Laborde determined that radioactivity releases immense amounts of heat -- 100 calories per gram per hour.