the.com/incandescence

the body's brightness when it gets hot enough to stop hiding and start glowing

means The emission of visible light by an object because it has become hot enough to glow, as with the white-hot filament of an old bulb or molten metal.

from From Latin incandescere, "to glow white," built from the intensifying prefix in- plus candescere, "to begin to shine" — itself from candere, "to be white or to glow," the same root that gives us candle, candid, and the candidates of ancient Rome who wore bright white togas. The -escere ending marks a beginning, so the word carries a sense of something just catching light.

heat tax
Bulbs waste 90% of energy as heat, not light
color clock
Hotter objects glow blue, cooler ones glow red
banned glow
Many countries phased out incandescent bulbs entirely
star tongue
Stars announce their temperature through their color
red threshold
Things start visibly glowing around 525 degrees Celsius
for instance

tungsten filament light bulb — thomas edison's 1879 invention that produces light by heating tungsten wire to ~2700k until it glows

halogen lamp — modern incandescent variant using halogen gas, operating at ~3000k, extends bulb life compared to standard incandescent

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