(physics) electromagnetic radiation that can produce a visual sensation
Light
Visible light
Natural philosophy
Physics
Actinic radiation
Actinic ray
Candlelight
Corona
Counterglow
Daylight
Firelight
Fluorescence
Friar's lantern
Gaslight
Gegenschein
Glow
Glowing
Half-light
Ignis fatuus
Incandescence
Irradiation
Jack-o'-lantern
Lamplight
Light beam
Luminescence
Meteor
Moon
Moonlight
Moonshine
Radiance
Ray
Ray of light
Scintillation
Shaft
Shaft of light
Shooting star
Starlight
Streamer
Sun
Sunlight
Sunshine
Torchlight
Twilight
Will-o'-the-wisp
Beam
Beam of light
Candle flame
Electromagnetic spectrum