Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 367
RIMENTAL SCIENCE. 120° to 130^ Fah. by means of a small spirit lamp. The tem-perature was measured by a thermometer attached to theside of the vessel. The plate was raised occasional!) andexamined by the light of a taper, until the picture was fullybrought out, when it was removed from the mercury… … Developing the Plate. the bromo-iodidc of silver not acted upon b} light. Theplate was then thoroughly washed, and afterward gilded ortoned bv pouring upon it a weak solution of chloride of * A fortunate accident led to the discovery of the development of thephotographic impression by means of the…
Physics · Lantern projection · Electric apparatus and appliances
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