the.com/incandescent bulb
a wire so offended by electricity it glows until it dies of embarrassment.
means a light source that produces light by heating a thin filament until it glows white-hot, wasting most of the energy as heat.
from edison didn't invent it so much as out-patent everyone else in 1879, finding a carbonized bamboo filament that survived long enough to be commercially sane, after decades of rival inventors like swan and jablochkov had already gotten wires to glow.
efficiencyonly about 5 percent becomes visible light
filament choicetungsten replaced carbon because it barely melts
phaseout speedbanned or restricted in over 100 countries since 2009
longevity champcentennial bulb has burned since 1901, mostly
for instance
edison's 1879 bulb — lasted 13.5 hours on carbonized thread, historic proof
centennial light — livermore fire station bulb, glowing continuously since 1901
ge mazda lamp — 1909 tungsten filament model that made bulbs actually practical