amperage
black
bright
bulb
conservation
control
dial
display
electric
electrical
electricity
energy
environmental
equipment
filament
fuel
gauge
generation
glass
illuminated
industry
innovation
inspiration
instrument
invention
isolated
lamp
light
lightbulb
lighting
measurement
measuring
metal
meter
multimeter
power
reflection
scale
solution
spiral
strobe
supply
technology
tool
transparent
tube
tungsten
voltmeter
white
working