Light

Sunlight

Natural sources of light

Bioluminescence

Light sources

Incandescent light

Rectilinear propagation of light

Photography of sun using pinhole camera

Angle of incidence

Angle of reflection

only source of light for plants

vital role in photosynthesis

sources which emit light naturally

effect of certain chemical reaction occuring in the organism

objects which are able to emit light

the glowing of hot iron rod

light travels in straight line

solography

angle between incident ray and normal

angle between reflected ray and normal