# What does it mean that light is quantized?

## What does it mean that light is quantized?

Photons are a ​quantized​ particle. This means they exist only in discrete amounts of energy, rather than any amount of energy in between. So if a photon is the result of a “falling electron,” a photon must also come in only specific energy amounts, or quanta.

Can light be quantized?

As we’ve discussed, light is quantized, composed of individual quanta called “photons.” The photons can be thought of as individual packets of light, each with an energy proportional to the light’s frequency: (E_{photon} = hf\), where h is Planck’s constant.

How is intensity of light related to frequency?

if you consider light is wave, intensity is related to light radiation energy and frequency is the number of waves per second. Frequency is related to photon’s energy (E = hν , E is energy, h is planck’s constant and ν is frequency) . In particle nature, intensity is related to number of photons in the radiation.

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### What is the difference between continuous and quantized energy?

If the energy levels are continuous (within a given interval of energies), then a particle (or system) can in principle have any energy in that interval. If they are quantized into say E1,E2…, then a particle (or system) can have only one of those energies, and not anything in between them.

What is quantization frequency?

Energy is quantized in some systems, meaning that the system can have only certain energies and not a continuum of energies, unlike the classical case. This would be like having only certain speeds at which a car can travel because its kinetic energy can have only certain values.

Is light intensity and frequency the same?

Frequency is defined as the number of wavelengths passing through a fixed point per unit time. Whereas, Intensity of light is the number of photons falling on a certain area, within some interval of time.

## Is intensity and frequency related?

For simple mechanical waves like sound, intensity is related to the density of the medium and the speed, frequency, and amplitude of the wave.

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What does it mean to say light is quantized?

In this idea, one of these individual particles is called a “quantum”. (The plural is “quanta”). The quantum of light is called a “photon”. Photons are the particles of light. Light is made of photons. That’s what it means to say that light is quantized.

What is the quantum of light called?

The quantum of light is called a “photon”. Photons are the particles of light. Light is made of photons. That’s what it means to say that light is quantized.

### Does the intensity of light depend upon the frequency of light?

Then the only thing possible is that n is reduced to half due to which the photocurrent should also be reduced but that doesn’t happen experimentally. So does the intensity of light depend upon the frequency? Yes, the intensity depends, in part, on the frequency. Intensity is power per unit area. Power is energy per time.

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What is the intensity of a photon?

Intensity is power per unit area. Power is energy per time. For a photon, the energy is . So, the intensity will be if is the monochromatic photon emission rate (photons per second), is the frequency of the photons, and is the area these photons are hitting. If the only thing one changes is the frequency of the photons,…