Museum of Science and Industry

Front:
3100 MILES 60 WAVE LENGTH ➡ FREQUENCY I INCH 10,000,000,000 IS VISIBLE ULTRAVIOLET XRAYS GAMMA I MILLIONTH INCH 1016 CYCLES PER SECOND

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MUSEUM OF SCIENCE AND INDUSTRY Chicago, Illinois ELECTRIC THEATER - Several times daily, visitors to this exhibit on electricity enjoy lively demonstrations in the "Electric Theater," and are surprised and amazed at the feats which can be accomplished with electricity. Museum of Science and Industry, East 57 and South Lake Shore Drive COLOURPICTURE BOSTON, MASS. 02130 P86771