Word: cesium
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
With an air of "There, that will convince them," Professor Fred Allison of Alabama Polytechnic Institute last week slapped on his desk a fresh copy of the American Chemical Society's Journal. "Them," referred to everyone who doubted that Professor Allison had discovered Element No. 87, or eka-cesium. in 1930 and Element No. 85, or eka-iodine last April by means of his new magneto-optical machine...
...Them" referred particularly to Professor Jacob Papish of Cornell, who last autumn recognized eka-cesium with the x-ray spectrograph. With an x-ray spectrograph Professor B. Smith Hopkins of the University of Illinois discovered the third last unknown element, No. 61, of the Periodic Table, which he named illinium (TIME, March...
Element No. 87's discovery was claimed last year by Dr. Fred Allison of Alabama Polytechnic Institute. Recently he said he had found No. 85, ekaiodine, the other unisolated element. Professor Jacob Papish also claimed discovery of No. 87, eka-cesium. He told the Academy he had made tests with Dr. Allison's magneto-optic device, found chemical mixtures sometimes made it register elements not really present...
...Alabama Polytechnic Institute Professor Fred Allison early last year recognized eka-cesium, the 80th element in the Periodic Table (TIME, Feb. 17, 1930). Last week he had eka-iodine, the 88th and last unknown element...
...elements which the late great Russian Dmitri Ivanovitch Mendelèeff (1834-1907) predicates with his Periodic Law, 16 have been discovered since 1894.* Two remain to be isolated-eka-iodine and eka-cesium.† Last week Dr. Fred Allison and Edgar Jackson Murphy of Alabama Polytechnic Institute at Auburn, Ala., reported that they had "evidence of considerable weight for the presence" of eka-cesium in certain salts they had reduced from lepidolite, a form of mica, and pollucite, a mineral consisting chiefly of cesium, aluminum and silicon. When they break down their salts they will get a soft silvery...