Word: pyrogallol
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Dates: during 1940-1949
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When ozone is bubbled through a dilute pyrogallol solution, the liquid glows brightly though no heat is evolved. Not true is the common saying that scientists are still searching for "cold light." Fluorescent and vapor-discharge lamps (e.g., neon, sodium) are true "cold lights" in that heat is not what makes them shine...
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