Caption: Booklet - One Hundred Million (Impact of UI) (1931)
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Other inv< ition in stru. be met ioned but enough h U n tctor the invest itions in the civil in the developm it of that branch ' high » bi n i« In the Realm of Physics While the main concern the de| it of | with problems of pure scien< ppl tion hich to the industrial wealth of the Stair a: ia-\ ours*wtril te direct] irtant the latter, the work in the field oi icou of I Idii has be wide importance. The department h much in ph • • md particularly with the development th tr ell. Thi cell, as perfected at Illinoi is sen th t it r ts to the 1 of a star which cannot be seen by the naked < 1 irthermore, 111; nois scientists have made the cell "fatigu< pr :'." wher prede cessors required constant rejuvenation. The photoeli trie cell « so improved in our laboratories that it In me a us< ul ph 1 instrument which is widely used in asi inomy. ph] . In istr me<li cine, and for pure scientific puq S. The weak phot rrer. has been amplified up to a million tim< by an and- :i tu The I .:versity has received a patent on certain : rms " photoel tri cell as a result of its investigations. In the last few y< photoel trie cells have been introduced in the industries: the manufact the cells has itself become a considerable industry. The} are i I I r the reproduction of sound in talking pictures, for the repr n i images in television, for the selection of minerals. ] pers, cig ill bearing . etc.. for the an: matic c ati 1 i tses in tunnels, smoke stacks, etc., >r s jnaling purp ses in rail ul| r many other applications. The physic department ha i la si e development of this branch of industry. There has also been invented a type of alkali \ or d tube for radio pur] s which reduces the "] ittery necess mM \ to about 7 volts by the inti luction i potas tn alloy into the tube. Thes nsitive radio tub in it : | being manu - i hired by one of the nation's largest concerns. itions in the a >usti< i buildin lia\. ;n in '• 'I'h. research* have resulted in ui Kx perimenl Station bulletins " Vcousti of \udu. ium "( :, "' I '"" " sound proof Partitions," and " I V \b irp tion I b Material Which have been distributed free!) thi :h< i" an hit' builders and other interested |i | w\ bull tm aita.ns information that ma) I put to practical th tl / I 2o | Im
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