Science: Three-Ton Brain

To have the public's first look at the biggest and keenest mechanical brain in the world, a total of 6.000 persons one day last week trooped down into a basement of the University of Pennsylvania's Moore School of Electrical Engineering in Philadelphia. There they found a new differential analyzer even more formidable than its name—a maze of delicate mechanisms united in a 28-ft. monster weighing three tons (see cut). They saw innumerable gears mesh silently, shafting turn on jeweled bearings, operators carefully adjust hand controls; they heard five small motors tranquilly...