The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 247
... radiations at the desired wave- length . Ultraviolet lamps are usually housed in quartz or special glass that passes ultravio- let radiation more readily than ordinary glass . Ultraviolet lamps were developed for medi- cal use after the ...
... radiations at the desired wave- length . Ultraviolet lamps are usually housed in quartz or special glass that passes ultravio- let radiation more readily than ordinary glass . Ultraviolet lamps were developed for medi- cal use after the ...
Page 347
... radiation belts , two zones of radiation encircling the Earth , brought about new understanding of cosmic radiation and its effects upon the Earth . A naval officer during World War II , Van Allen helped develop the radio proximity fuse ...
... radiation belts , two zones of radiation encircling the Earth , brought about new understanding of cosmic radiation and its effects upon the Earth . A naval officer during World War II , Van Allen helped develop the radio proximity fuse ...
Page 783
ondary radiation ( the re - emission of X - rays from materials irradiated by a primary beam ) , the absorption and transmission of X - rays , their dual nature ( having characteristics of both waves and particles ) , continuous X ...
ondary radiation ( the re - emission of X - rays from materials irradiated by a primary beam ) , the absorption and transmission of X - rays , their dual nature ( having characteristics of both waves and particles ) , continuous X ...
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