Enter LED bulbs. LED bulbs followed compact fluorescents (CFLs) onto store shelves in the early 2000’s as an even more ...

The H7 bulb was introduced as an improvement on the H4 bulb. The “H” refers to halogen. These bulbs contain a tungsten filament enclosed in a halogen gas-filled quartz capsule. This allows higher ...

The common items in this case were “filaments” from LED light bulbs, those meant to mimic the look of clear-glass incandescent light bulbs. [Andypugh] had been looking at them with interest ...