How can you prove that light is a particle?
Photoelectric effect occurs when a high energy photon (light particle) strikes a metal surface and an electron is ejected while the photon disappears. This shows that light can be a particle AND a wave.
How does the photoelectric effect show that light has some properties of stream of particles?
How does the photoelectric effect show that light has some properties of a stream of particles? The photoelectric effect shows that light has some properties of a stream of particles because this effect is when for example a beam of high frequency light shines on some metals causing tiny particles to move.
Is light a wave or a particle photoelectric effect?
The above experiment shows light behaving as a wave. But Albert Einstein showed us we can also describe light as being made up of individual particles of energy: photons. This is necessary to account for something called the “photoelectric effect”. This is the photoelectric effect.
How does the photoelectric effect prove wave particle duality?
The energy of the emitted electrons depends only on the frequency of the incident light, and not on the light intensity. Study of the photoelectric effect led to important steps in understanding the quantum nature of light and electrons, which would eventually lead to the concept of wave-particle duality.
How does observing a particle change it?
Once an observer begins to watch the particles going through the openings, the picture changes dramatically: if a particle can be seen going through one opening, then it’s clear it didn’t go through another.
What does light do in the photoelectric effect answers?
When light shines on a metal, electrons can be ejected from the surface of the metal in a phenomenon known as the photoelectric effect. This process is also often referred to as photoemission, and the electrons that are ejected from the metal are called photoelectrons.