Prakaas

Prakaas (Light in English) ek rakam ke energy hae. Ii ek rakam ke electromagnetic radiation hae, jon ki uu wavelength me hae jiske insaan ke aankhi se deka jaae sake hae.^[1] Physics me, light sabd ke matlab, koi bhi wavelength ke electromagnetic radiation hae, chaahe iii dekhae nai to, nai dekhae.^[2][3] Light, chhota chhota packets, jiske photons bola jaawe hae, me rahe hae. Iske properties duuno wave aur particles ke rakam rahe hae. Light ke parhai ke optics bola jaawe hae.