Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
Einstein and the Laser Einstein and the Laser
Einstein and the Laser
In 1917 Einstein, in the process of providing an especially simple and direct proof of Planck’s radiation equation introduce into physics a new concept- that of stimulated emission. As it happens this process is basic to laser operation. Even though the first operating laser did not appear until 1960, the groundwork for its invention was put in place by Einstein’s work. The importance of stimulated emission is indicated by the fact that the very word “laser” is an acronym for “light Amplification by the Stimulated Emission of Radiation.” It is interesting that, in 1905, Einstein first advanced the concept of the photon and realized that it could provide an explanation for the photoelectric effect. We learn from both of these examples that practical devices of major importance can flow from the study of problems that seem to have no relevance to technology. When next you see a photoelectric elevator door opener or listen to a CD player, think of Einstein. Now let us examine three processes that involve the interaction between matter and radiation.
In 1917 Einstein, in the process of providing an especially simple and direct proof of Planck’s radiation equation introduce into physics a new concept- that of stimulated emission. As it happens this process is basic to laser operation. Even though the first operating laser did not appear until 1960, the groundwork for its invention was put in place by Einstein’s work. The importance of stimulated emission is indicated by the fact that the very word “laser” is an acronym for “light Amplification by the Stimulated Emission of Radiation.”
It is interesting that, in 1905, Einstein first advanced the concept of the photon and realized that it could provide an explanation for the photoelectric effect. We learn from both of these examples that practical devices of major importance can flow from the study of problems that seem to have no relevance to technology. When next you see a photoelectric elevator door opener or listen to a CD player, think of Einstein.
Now let us examine three processes that involve the interaction between matter and radiation.
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -