اختبار دكتور فواز

متعدد الالوان

احادي اللون

ثنائي اللون

غير ذلك

Spontaneous

Stimulated

Spectral

Stable

Directionality

Coherence

Monochromatic

Amplification

متعدد

احادي

احادي ومتعدد

Chemical reactions

Excitation of atomic electrons

Nuclear fusion

Gravitational forces

They travel in a single, coherent direction.

They have random directions and phases.

They are always absorbed by other electrons.

They have higher energy than the absorbed photon.

Spontaneous emission requires an external photon, while stimulated emission does not.

Stimulated emission produces coherent photons, while spontaneous emission produces incoherent photons.

Spontaneous emission occurs only in gases, while stimulated emission occurs only in solids.

Stimulated emission results in the electron moving to a higher energy level, while spontaneous emission results in it moving to a lower level.