lightbulbs

Screw-in light sources

Lightbulbs are glass enclosures containing a filament or other element that produces light when electrically powered.

The plural appears in practical contexts—I need to pick up some lightbulbs—and in the figurative sense of sudden inspiration: Lightbulbs went off in my head.

The cartoon image of a lightbulb appearing above someone's head represents a new idea.

invention

Edison

Prolific American inventor

  • patentObvious; inventor's monopoly
  • SwanHereditary family identifier
  • filamentVery thin thread

tungsten · carbon · vacuum · prototype · laboratory · breakthrough · arc-lamp · socket · commercialization · experiment

technology

LED

Semiconductor that glows

fluorescent · filament · tungsten · dimmable · three-way · tube · compact · vintage · coiled · globe

brightness

lumens

Measure of visible light

radiant · dimmer · daylight · glowing · incandescent · halogen · brightness · output · intensity · candlepower

energy

electricity

Energy from charged particles

voltage · power · savings · kilowatt-hour · ecofriendly · longevity · lifespan · heat · cost · current

idea

eureka

Discovery triumph cry

insight · breakthrough · innovation · creativity · genius · inventiveness · ingenuity · imagination · concept · thought

design

globe

Spherical representation of landmasses

  • candelabraMulti-branched candle stand
  • tubeHollow cylindrical passage
  • spiralCurve winding around center

flame · frosted · clear · decorative · pendant · chandelier · sconce · vanity · flood · spot

Categories
Opposites
pre-electric/natural light sources

lightbulbscandles

Wax lights with wicks

torches · oil lamps · kerosene lanterns · firelight · candlelight

darkness/absence of light

lightbulbsdarkness

Total absence of light

blackout · pitch black · shadows · dimness · blackout curtains

Phrases
Family

lightbulb

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G