[General Electric exhibit displaying different types of lamps used throughout human history. Exhibit includes a stone lamp from ancient Babylonia; a crude saucer lamp from southern Europe; a bronze lamp from Rome; a Betty lamp used in colonial New England; a whale oil lamp likely used by an early Chicago family; Edison's first practical lamp; the "smallest lamp in the world," used for medical examination inside the human body; and the "largest lamp in the world," used for lighting airports, athletic fields, and in the motion picture industry.]
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