The life and work of Sir Jagadis C. Bose / by Patrick Geddes.

  • Geddes, Patrick, Sir, 1854-1932.
Date:
1920
Catalogue details

Licence: In copyright

Credit: The life and work of Sir Jagadis C. Bose / by Patrick Geddes. Source: Wellcome Collection.

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    communications by J. Chunder Bose published in the “ Proceedings of the Royal Society,” 1902. It is supposed on good grounds that “ the effect of radiation is to produce a state of molecular strain.” Experimental evidence is adduced which shows that the molecular strain caused Fig. 2.—Photography without light. by the action of light, changes the physico-chemical properties of substances, so that it becomes possible to develop a latent image through differences in chemical stability as, for instance, by reducing agents/ Dr. Hartley’s own experiments lent strong support to this, for the spectra obtained by him showed ( that the solutions of metallic nitrates are in a state of molecular strain.’ 1 1 Journal of the Chemical Society, 1903.