The art of mechanical analog computing reached its zenith with the differential analyzer, built by H. L. Hazen and Vannevar Bush at MIT starting in 1927. This built on the mechanical integrators of James Thomson and the torque amplifiers invented by H. W. Nieman. A dozen of these devices were built before their obsolescence became obvious. COUNT 3
QSN1 Where was the differential analyzer built by H.L. Hazen? ANS1 MIT QSN2 The differential analyzer by H.L. Hazen and Vannevar Bush was first being built in what year? ANS2 1927 QSN3 The torque amplifiers of the differential analyzer were created by whom? ANS3 H. W. Nieman