1936-'40
Parade of Progress |
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1936-'40
Parade of Progress |
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PROGRESS IN MEANS OF TRAVEL |
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| Until the 20th
Century, progress in most forms of transportation was slow, very slow.
First, man walked, then he rode a beast, then he let the beast pull him on skids, then he invented the wheel. In time came the steam engine, later the internal combustion engine which has made possible the automobile, the airplane, and now the new streamlined trains. Back in 1900, there were a few "horseless carriages," but good old Dobbin still pulled the street car and the "bicycle built for two" was really the smart thing to ride. In the "General Motors Parade of Progress" dioramas show animated street scenes of 1900 and 1936, each with its typical vehicles. A mural painting illustrates the Diesel powered trains one of the most recent transportation developments made possible by the research facilities of present day industry. |
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Copyright 1999-2018. All rights reserved.
(LEFT)
There are stroboscopes, an oscilograph, "electric
eyes," a neon crater tube, a carbon stack indicator, an induction
furnace, a knock-testing motor.
(LEFT)
Music is transmitted on a light beam by means of an
"electric eye," a photo-electric cell. A record turns here
and activates light from a neon crater tube. That varying light
travels across the room and falls on the photo-electric cell which
operates the loud speaker.
At the "General Motors Parade of Progress,"
a view into a running gasoline motor is shown to the public for the
first time. You look through a quartz window and see the four cycles
carried out -- intake, compression, explosion, and exhaust, first with
ordinary gasoline, then with ethyl. You can readily detect which has
the more "knock." 
