Word: latent
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Dates: during 1940-1949
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Behind this simple procedure is a radical innovation. In conventional photography, the light which comes through the lens forms a "latent image" in the silver bromide of the film. A proper chemical "developer" darkens this image by turning its silver bromide into black metallic silver. In the negative, the lightest parts of the scene photographed show up blackest, the dark spots show up lightest. To reverse the negative and get a print, the photofinisher goes through the whole dark-into-light process again...
...Again. As the chemicals go to work, one of them "develops" the latent image in the film, turning its silver bromide into metallic silver. The silver is insoluble and stays put on the negative. But the silver bromide outside the latent image remains soluble. Another chemical in the mixture dissolves it, carries it over to the print paper. There it is broken down into dark metallic silver, deposited on the paper...
Planned Storms. The "latent heat" liberated by the freezing of the water produced turbulence in the cloud, spreading the reaction through its mass. Schaefer figured that a single pellet falling 2,000 feet through a cloud might produce several tons of snow. Snowmaking will not cure droughts over large areas. It cannot conjure moisture out of an atmosphere which contains too little to precipitate. But possibly farmers in irrigated districts may coax more snow to fall on the mountain areas which feed their ditches...
...think the regular force will be able to handle them," declared the traffic head when quizzed about possible Saturday night demonstrations in the Square. The department saw no cause for alarm over latent unruliness and asserted that the problem had not even come up for discussion...
...almost endless topic of discussion for Boston sports writers. Observers close to the squad are of the belief that, while not at the high emotional pitch reached for the Holy Cross game--a tension that will not return until Yale week--the Varsity is fully aware of the power latent in the Rutgers attack, and is far from complacent...