Museum of Science and Industry

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NERARED ARAIOLET XRAYS BLE SAMMA 11 WAVE LENGTH FREQUENCY TINCH 10,000,000,000 I MILLIONTH INCH 106 CYCLES PER SECOND 3100 MILES 09

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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. P86771 Museum of Science and Industry, East 57 and South Lake Shore Drive © COLOURPICTURE BOSTON, MASS. 02130