What did Einstein say about the photoelectric effect?

Light, Einstein said, is a beam of particles whose energies are related to their frequencies according to Planck’s formula. When that beam is directed at a metal, the photons collide with the atoms. If a photon’s frequency is sufficient to knock off an electron, the collision produces the photoelectric effect.

On which principle is the photoelectric effect based?

conventional EM principle
Consistent with the conventional EM principle, the photoelectric effect contributed to the transmission of energy from light to an electron. In this view, a variation in the power of light would generate fluctuations in the kinetic energy of the electrons blasted out from the metal.

What is photoelectric effect class 11?

“The phenomenon of ejection of electrons from the surface of a metal when light of suitable frequency strikes on it, is called photoelectric effect. The emitted electrons are called photoelectrons.”

What did Einstein explain about photoelectric effect class 11?

Since light is bundled up into photons, Einstein theorized that when a photon falls on the surface of a metal, the entire photon’s energy is transferred to the electron. A part of this energy is used to remove the electron from the metal atom’s grasp and the rest is given to the ejected electron as kinetic energy.

Is photoelectric effect possible at all frequencies?

Photoelectric emission is not possible at all frequencies because for the emission to occur there should be a minimum value of frequency related to the work function of the metal.

Can a high school student read Feynman lectures?

Reading the Feynman Lectures will require a prior understanding of differential equations and other stuff which are not taught in High School courses. Although he does mention in passing the mathematical jargon used before working with them, it is often not enough to work with.

What are the Feynman Lectures on physics about?

The Feynman Lectures on Physics Vol. I Ch. 2: Basic Physics In this chapter, we shall examine the most fundamental ideas that we have about physics—the nature of things as we see them at the present time. We shall not discuss the history of how we know that all these ideas are true; you will learn these details in due time.

What was Richard Feynman like as a teacher?

Feynman was a remarkably effective educator. Of all his numerous awards, he was especially proud of the Oersted Medal for Teaching, which he won in 1972. The Feynman Lectures on Physics, originally published in 1963, were described by a reviewer in Scientific American as “tough, but nourishing and full of flavor.

How many lectures did Feynman give at Cornell in 1964?

Feynman’s Messenger Lectures full hd videos of 7 lectures feynman gave at cornell in 1964.

What did Matthew Sands think of Feynman’s tips on physics?

Matthew Sands, in his memoir in Feynman’s Tips on Physics expressed a far more positive view.