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

Universal gravitation, Object A attracts object B with a gravatational forc...

Object A attracts object B with a gravatational force of 10 newtons from a given distance. If the distance between the two objects is doubled, what is the changed force of attracti

Imp, o meteors of rest-mass 0.1 and 0.2 kg, respectively, collide. If the r...

o meteors of rest-mass 0.1 and 0.2 kg, respectively, collide. If the relative speed before collision is 0.1c and an observer sees them coming with an equal and opposite speed and s

Determine working of peak-to-peak voltage, For the square voltage waveform ...

For the square voltage waveform displayed on an oscilloscope shown in Figure, find  (a) its frequency,  (b) its peak-to-peak voltage.

Isolation transformers and step up or step down transformer, Q. What is the...

Q. What is the dissimilarity between isolation transformers and step up or step down transformer? Answer:- In fact an isolation transformer may be physically the same as a

Digital electronics: binary system, (i) A number system which has only two ...

(i) A number system which has only two characters i.e. 0 (Low value) and 1 (High value) is known as binary system (ii) The electrical circuit which operates only in these two di

Magnetic susceptibility, If the material is in the crystalline form, how wi...

If the material is in the crystalline form, how will the susceptibility be affected?

Select the pairs of isotopes, Q. Select the pairs of isotopes, isobars and ...

Q. Select the pairs of isotopes, isobars and isotones from the following nuclei: 11 Na 22 , 12 Mg 24 , 11 Na 24 , 10 Ne 23 Isotopes are 11 Na 22 , 11

Determine the vertical reaction force on the pin, To test the deflection of...

To test the deflection of the uniform 400N/m beam the 600N boy exerts a pull of P42N on the rope. The distance between the rope and the support at A is P43 metres.  Assume the pull

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