|Bepannaah Chat Club #66|Fifty Shades of Besharminess

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1001

In other words, individual photons can deliver more or less energy, but only depending on their frequencies.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1002

In nature, single photons are rarely encountered. The Sun and emission sources available in the 19th century emit vast numbers of photons every second, and so the importance of the energy carried by each individual photon was not obvious.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1003

Einstein's idea that the energy contained in individual units of light depends on their frequency made it possible to explain experimental results that had hitherto seemed quite counterintuitive.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1004

However, although the photon is a particle, it was still being described as having the wave-like property of frequency.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1005

Effectively, the account of light as a particle is insufficient, and its wave-like nature is still required.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1006

The relationship between the frequency of electromagnetic radiation and the energy of each individual photon is why ultravioletlight can cause sunburn, but visible or infraredlight cannot.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1007

A photon of ultraviolet light delivers a high amount of energy - enough to contribute to cellular damage such as occurs in a sunburn.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1008

A photon of infrared light delivers less energy - only enough to warm one's skin. So, an infrared lamp can warm a large surface, perhaps large enough to keep people comfortable in a cold room, but it cannot give anyone a sunburn.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1009

All photons of the same frequency have identical energy, and all photons of different frequencies have proportionally (order 1,Ephoton=hf) different energies.

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Rayan

@MrToolConfuser

Stunner

Posted: 7 years ago

#1010

However, although the energy imparted by photons is invariant at any given frequency, the initial energy state of the electrons in a photoelectric device prior to absorption of light is not necessarily uniform.

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