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An electric light in which a filament is heated to incandescence by an electric current.

Incandescent Bulb

An electric light in which a filament is heated to incandescence by an electric current.

(1847-1931) Famous American inventor.

Thomas Alva Edison

(1847-1931) Famous American inventor.

An electric arc lamp by Brush Electric Company. Arc lamps produce light by an electric or voltaic arc.

Arc Lamp

An electric arc lamp by Brush Electric Company. Arc lamps produce light by an electric or voltaic arc.

An electric arc lamp by Brush Electric Company. Arc lamps produce light by an electric or voltaic arc.

Arc Lamp

An electric arc lamp by Brush Electric Company. Arc lamps produce light by an electric or voltaic arc.

The incandescent lamp or globe lamp, showing carbon filament at a.

Incandescent Lamp

The incandescent lamp or globe lamp, showing carbon filament at a.

"The carbon lamp-- the oldest form of incandescent lamp." -Bodmer, 1917

Carbon Light Bulb

"The carbon lamp-- the oldest form of incandescent lamp." -Bodmer, 1917

"Improved Mazda lamp for lighting large areas-- the most efficient lamp ever made." -Bodmer, 1917

Improved Mazda Light Bulb

"Improved Mazda lamp for lighting large areas-- the most efficient lamp ever made." -Bodmer, 1917

"Standard Mazda lamp-- the highest development of the incandescent lamp." -Bodmer, 1917

Standard Mazda Light Bulb

"Standard Mazda lamp-- the highest development of the incandescent lamp." -Bodmer, 1917

"The Tantalum lamp developed just before the Mazda lamp." -Bodmer, 1917

Tantalum Light Bulb

"The Tantalum lamp developed just before the Mazda lamp." -Bodmer, 1917

A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light from electricity. These components usually have a base of ceramic, metal, glass or plastic, which makes an electrical connection in the socket of a light fixture. This connection may be made with a screw-thread base, two metal pins, 2 metal caps or a bayonet cap.

Light Fixture

A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light…

The first filament and bulb created by Thomas Edison.

Lightbulb

The first filament and bulb created by Thomas Edison.

"In photometry (measure of light), a mounting for an incandescent lamp ... Rotator. The lamp to be tested is mounted upon a revolving spindle, ss, current being supplied through the brushes bb. The axis of rotation may be varied by turning the spindle about the horizontal shaft a." -Whitney, 1911

Rotator

"In photometry (measure of light), a mounting for an incandescent lamp ... Rotator. The lamp to be tested…