This still works fine. it had years of dust, so i took it out to clean it off. Turns out the lamp is blackened on the top on the inside where the dust was on top. Date code is "W C" if anyone can date that...
the as the filament get evaperated it become thinner over the years and it create hot spots that heat them up a bit more. one big killer on light bulb is thermal shock from fliping the switch wil bend the filament. like you took thin piece of metal and you bend it back and forth
it breaks in two. you can get very long hours from a lamp if you used dimmer switch that slow the filament expansion.
i have see bulb really black after EOL. esp automotive and 12 volt edison base bulbs.
it breaks in two. you can get very long hours from a lamp if you used dimmer switch that slow the filament expansion.
i have see bulb really black after EOL. esp automotive and 12 volt edison base bulbs.