. Bell telephone magazine . ies in-clude all the engineering arts irhich pertain to electricalcommunication and to the composition and construciionof communication equipment, and all the sciences basicto those arts. Mathematics, ptiysics, and chemistry arefundamental to its work; biology and botany enter intoits consideration of textiles cmd timtyer products, andpfiysiology and psycliology into its l^noirledge of the actionof vocal and auditory mectutnisms. In its searcti for tlie belter ttiing and the better tray,the Laboratories must understand old materials morelliorougldy: must develop or
. Bell telephone magazine . ies in-clude all the engineering arts irhich pertain to electricalcommunication and to the composition and construciionof communication equipment, and all the sciences basicto those arts. Mathematics, ptiysics, and chemistry arefundamental to its work; biology and botany enter intoits consideration of textiles cmd timtyer products, andpfiysiology and psycliology into its l^noirledge of the actionof vocal and auditory mectutnisms. In its searcti for tlie belter ttiing and the better tray,the Laboratories must understand old materials morelliorougldy: must develop or invent neir materials, alloys,compounds: must devise new methods, processes, tecti-niques. Its fruitfulness depends on inventive abilitybacked by patient inquiry and ctiecked by tests often involve ttwusands of measurementsivitfi complex instruments t)uilt for ttie purpose. Someof tliese instruments, and ttte men wlio design, build, anduse them, are stiown in t fie pictures on the following pages. 61. 77/r /)ilcli (111(1 Ioliimc of sound cmillcd llirotu/li (in (irlijicidl nioiilli c(in he closely conlrollcd. JJctirc, the IrunsiniUcr b(niKj (uJjtislcd in front of one of Ihese devices con he tested under al)solaleh slondord conditions. 62
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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1922
