Word: vaporous
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...Roll ads under "Metropolis Mailbag" in Superman comics: the same color seeming lighter or darker according to its background, a green, black and orange flag that makes you see red, white and blue when you look away. A prism breaks white light into the color spectrum, and a sodium vapor lamp turns everyone's skin yellow. There are lots of fun knobs to turn and fun buttons to push, and color TV excerpts from ZOOM. But in failing to approach the really challenging question of why color works the way it does, the Museum frustrates the viewer's curiosity...
...automakers wish. According to GM, this "catalytic converter" will improve gas mileage by up to 13% and make cars perform as well as in the good old days. Shaped like a muffler and attached to the exhaust system, it will also convert hydrocarbons and carbon monoxide into water vapor and other harmless compounds...
Comets, in fact, are nowhere near as large as planets. Their central structure, or nucleus, is usually no more than a few miles in diameter; it is believed to consist largely of frozen gases-mainly water vapor, methane, carbon dioxide and ammonia, and perhaps some hydrocarbons-and dust particles. That, at least, is the commonly accepted "dirty snowball" theory, originally proposed by Harvard's Whipple in 1950. But there are those who take exception to Whipple. British Astronomer Raymond A. Lyttleton prefers his own "gravel-bank" theory, which holds that the cometary nucleus is really a loose mass...
...volcano has stopped spewing lava, but it is still giving off a column of steamy white vapor that rises several hundred feet...
...area develops over warm tropical waters, the newborn storm system is fed by evaporation from the sea. Helped by the whirling winds in the area (which move in a counterclockwise direction in the Northern Hemisphere and clockwise in the Southern), the rate of evaporation gradually increases. As the water vapor rises from the sea, it cools, condenses and releases enormous amounts of heat into the atmosphere. The heat, in turn, causes more evaporation and condensation, further fueling the brewing storm like the updraft in a chimney. As the winds build and the tropical storm edges away from its birthplace...