Bell worked extensively in medical research and invented techniques for teaching speech to the deaf. During his Volta Laboratory period, Bell and his associates considered impressing a magnetic field on a record as a means of reproducing sound. Although the trio briefly experimented with the concept, they could not develop a workable prototype. They abandoned the idea, never realizing they had glimpsed a basic principle which would one day find its application in the tape recorder, the hard disc and floppy disc drive and other magnetic media. COUNT 3
QSN1 What famous lab did Bell spend time working for? ANS1 Volta QSN2 What type of energy did Bell investigate at the Volta Laboratory? ANS2 magnetic QSN3 The magnetic field is part of what sort of recorder? ANS3 tape recorder