What is spontaneous emission, Physics

Assignment Help:

What is spontaneous emission? Explain in brief.

Spontaneous emission:

a. This is the process by that a light source as like an atom, molecule, nano-crystal or nucleus into an excited state undergoes a transition to the ground state and then emits a photon.

b. The atoms into the excited state drop to the lower energy state after they have stayed within the excited state for a short duration of time known their life time.

c. Throughout this process photons of energy = E2 - E1, that is energy difference in between the two states of the atom, those are emitted.

d. Spontaneous emission of light or luminescence is a basic process which plays a necessary role in various phenomena into nature and forms the basis of several applications, as like fluorescent tubes, plasma display panels, television screens, lasers and light emitting diodes.

773_Spontaneous emission.png


Related Discussions:- What is spontaneous emission

Finding time period and frequency, find time period and frequency of vibrat...

find time period and frequency of vibration of water level in a limb of manometer executing simple harmonic vibrations

Determine the current taken by the capacitor, A motor has an output of 4.8k...

A motor has an output of 4.8kW, an efficiency of 80% and a power factor of 0.625 lagging when operated from a 240V, 50Hz supply. It is needed to improve the power factor to 0.9

Speed of light, what will happen if we will walk with the speed of light or...

what will happen if we will walk with the speed of light or faster than it?

What is interference of light, Explain interference of light? Write two ess...

Explain interference of light? Write two essential conditions for sustained interference pattern to be produced on the screen. Illustrate a graph showing the variation of intens

Explain how receiver functions in fibre optic communication, Explain how re...

Explain how receiver functions in fibre optic communication system. Receiver: The optical signal received must be first converted within digital form and in case analog outp

Presbyopia, Presbyopia: The accommodation power of a person is lost by ...

Presbyopia: The accommodation power of a person is lost by which the suffers a long sightedness. It is known as Presbyopia or lack of accommodation.

How long it take transverse wave to travel entire length, I am a impaired s...

I am a impaired student and need a step by step solution for this problem. A32.0 m steel wire and a 23.0 m copper wire, both with 1.00 mm diameters, are connected end to end and

Equilibrium, what is the effect of torque and equilibrium on taps, doors,ha...

what is the effect of torque and equilibrium on taps, doors,handle bars and bicycles??

What is compton effect, The scattering of a photon by an electron is known ...

The scattering of a photon by an electron is known as Compton Effect. The momentum and energy is preserved. Scattered photon will have less power as compare to incident photon (les

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd