De quoi est fait incandescent light bulb
Light from a filament heated by current. Lodygin, Swan and Edison worked on it.
- Tungsten filament — a pour partie. A tungsten coil heated by current.
- Glass light bulb envelope — a pour partie. A glass bulb with a vacuum or inert gas.
- Screw lamp base — a pour partie. A screw contact (the Edison base).
- Joule heating — utilise. The filament is heated by current until it glows.
- Vacuum — utilise. The bulb was evacuated so the filament would not burn out.
- Tungsten — est fait de. A tungsten filament (since 1904–1910).
- Glass — est fait de. The glass bulb keeps a vacuum or inert gas so the filament does not burn out.