Single incandescent bulb

Light bulb

Single bulb

Incandescent bulb

Light source

Old fashioned

Single source

Electric bulb

Bright idea

Single lightbulb

Lone bulb

Glowing bulb

Electric light

Single light bulb

Unlit bulb

Source of light

Filament bulb

Bulb in isolation

Concept of simplicity

Elegance of incandescent bulb

Bulb with filament

Single filament

Focal point

Dark room

Lit bulb

Bulb illumination