Word: celle
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...rays v. Cells. Using X-ray bombardments much more prolonged and severe than those employed in medicine, Dr. Hugo Fricke of the Long Island Biological Laboratory arrived at a theory of what happens when an X-ray photon (unit of radiation) is received in a living cell. The high energy carried on the photon swings the electrons of the cell up to correspondingly high energy levels which represent temperatures of 1,000,000°. This lasts for only some .00001 sec., but large protein molecules may be broken up, carbon dioxide and hydrogen given off, and water molecules...
Although the meter contains a new type of photoelectric cell, of pure magnesium enclosed in corex glass, ultraviolet recorder: themselves are not especially new. But Professors Huxford & Cashman have started right out to get geographic comparisons. They find, for example, that Iowa and Nebraska are richer in sunburning sunlight than the Chicago region, that the uplands of South Dakota are richer still. They indicate their willingness to put their heads in a lion's mouth of uproarious dispute by comparing the healthfulness of Florida's sunshine with California...
...planned for three age groups: six to nine, nine to twelve, twelve and over. The American history course this year is dramatizing the past of eleven U. S. cities. The Science Club broadcasts simple experiments to be performed by the listener, such as opening and inspecting a dry cell battery or observing goldfish in a pan of deaerated water to prove that fish must breathe. The geography course recounts the travels of an imaginary Hamilton family, conveniently consisting of one child in each age group and Grandmother Hamilton, who provides learned commentary on places from Bogota to Baffin Island where...
Last week Washington's alert Science Service, browsing among the patent files, discovered that in his long search for a Unified Field Theory the great mathematician had not forgotten the uses of photoelectric cells. Patent No. 2,058,562, it appeared, had been issued to Dr. Albert Einstein and Gustav Bucky. Manhattan X-ray researcher, for an automatic device to prevent unskilled photographers from under-or over-exposing their plates.* A photoelectric cell attached to the camera measures the quantity of illumination available, adjusts a screen of varying transparency so that the proper amount of light is admitted...
...into Youth. The rule that what is young must irrevocably grow old is almost universal in Nature. But not quite. The bones of animals generate a young cell called an osteoblast, which becomes a middle-aged cell called an osteoclast, which becomes an aged cell called a fibroblast, which ultimately dies. Dr. Franklin C. McLean and his University of Chicago co-worker fed parathyroid extract to aged fibroblasts, turned them into baby osteoblasts...