Photon  [ENDORSED]

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Elyssa Smith 4B
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Postby Elyssa Smith 4B » Wed Oct 09, 2019 8:20 am

What exactly is a photon and how does it relate to electrons in the photoelectric effect?

claribel charway 1I
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Re: Photon

Postby claribel charway 1I » Wed Oct 09, 2019 8:25 am

Photons are essentially packets of energy. The photoelectric effect basically states that a certain amount of energy is required to emit an electron from a metal (work function). If the photon's energy equals or exceeds the work function then the photon will transfer it's energy to the electron so that the electron can be emitted.

Wendy 1E
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Re: Photon  [ENDORSED]

Postby Wendy 1E » Wed Oct 09, 2019 10:04 am

A photon is essentially a packet of electromagnetic energy. Photons are unique in that they are both, a particle and a wave. A photon must have enough energy (high enough frequency) in order to remove an electron from a metal. In other words, the photon's energy must be greater than or equal to the threshold energy of the metal, which is the amount of energy required to remove an electron. The threshold energy varies by metal.

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Re: Photon

Postby RoshniVarmaDis1K » Wed Oct 09, 2019 4:16 pm

A photon is a packet of energy, representing a way in which light acts as a particle.

A photon carries energy proportional to its frequency and has zero mass.

Katie Bart 1I
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Re: Photon

Postby Katie Bart 1I » Wed Oct 09, 2019 4:32 pm

How big is a photon in comparison to an electron?

Jack Riley 4f
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Re: Photon

Postby Jack Riley 4f » Wed Oct 09, 2019 4:42 pm

Photons don't necessarily have "size" as we think about it on a macroscopic scale. They are just packets of energy.

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Re: Photon

Postby 805307623 » Thu Oct 10, 2019 3:45 pm

I believe that a photon does not have a specific size. It carries energy, momentum,and frequency, but is simultaneously a particle and a wave.

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