Word: plates
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Dates: during 1930-1939
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...Lucas, who wanted to see the smallest detail possible, revived the German's idea, designed an ultraviolet microscope for experimentation. Because ultraviolet is invisible to the human eye he had to focus the rays upon a sensitive fluorescent plate, take pictures of the objects under his microscope. He wanted the instrument primarily to study metals, but since it was so powerful he and other scientists applied it to living cells. The shallowness of focus allowed them to take horizontal cross sections 1/100,000 of an inch apart...
Unapportioned among the big four Eastern railroads?Pennsylvania, New York Central, Baltimore & Ohio, Nickel Plate-Chesapeake & Ohio?was the New England rail territory in their huge Eastern merger agreement of last month (TIME, Jan. 12). Last week came an inkling of what these systems proposed to do with this important trackage when William H. Boyd, personal counsel for the Nickel Plate's Van Sweringen brothers, addressed 400 potent New Englanders at Providence. Mr. Boyd, who would not have conceivably spoken out of turn on such a delicate matter, outlined the following distribution of New England roads to the big four...
...Nickel Plate: Boston & Maine, Maine Central, Bangor & Aroostook...
...Benson who is widely-known as a portrait painter as well as etcher, gives a splendid demonstration of etching a plate...
...Plate clutch, making gear shifting and repairs easier...