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

What kind of batteries are used in tl coachees, What kind of batteries are ...

What kind of batteries are used in TL coachees. Briefly explain about each one of them? Ans. In TL coaches two kind of batteries are used. They are SMF and VRLA batteries.

What is the direction of related electric field, A plane e-m wave propagate...

A plane e-m wave propagates horizontally from east to west. If the magnetic field related with the wave, at a point in its path, is towards north, what is the direction of related

What is the wavelength of electromagnetic waves, What is the wavelength of ...

What is the wavelength of electromagnetic waves of frequency 5 x 1019Hz in free space? Give its two applications.

Gravitational force, A body of mass 2 kg thrown vertically upwards with a v...

A body of mass 2 kg thrown vertically upwards with a velocity 40 m/s comes to instantaneous rest at a height 50 m. Is there any other force (other than gravitational force), if yes

Temperature joule, Temperature joule; J (after J.P. Joule, 1818-1889) ...

Temperature joule; J (after J.P. Joule, 1818-1889) The derived SI unit of energy described as the amount of work done by moving an object by a distance of 1 m by applying a fo

Evaluate the final angular speed of the carousel, As seen from above, a pl...

As seen from above, a playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the ground grabs onto one of the bars o

De?ne reduction potential and oxidation potential, De?ne reduction potentia...

De?ne reduction potential and oxidation potential. Reduction potential of a metal is the measure of tendency of a metallic electrode to gain electrons when it is in contact wit

Does cph mass increase, Does CPH mass increase? Answer; Never, mass of ...

Does CPH mass increase? Answer; Never, mass of CPH is constant, as like its speed.

What is potential gradient, What is Potential Gradient Magnitude of ele...

What is Potential Gradient Magnitude of electric field at a point on an equipotential surface equal's rate of alter of potential, ΔV, with distance Δx, as point moves perpendic

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