(physics) electromagnetic radiation that can produce a visual sensation
any device serving as a source of illumination
of comparatively little physical weight or density
a particular perspective or aspect of a situation
make lighter or brighter
the quality of being luminous; emitting or reflecting light
long thick piece of wood or metal or concrete, etc., used in construction
a signal transmitted along a narrow path; guides airplane pilots in darkness or bad weather
smile radiantly; express joy through one's facial expression
