Planck's Constant

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anjali41
Posts: 109
Joined: Fri Aug 09, 2019 12:15 am

Planck's Constant

Postby anjali41 » Thu Oct 10, 2019 4:17 pm

I was just wondering what Planck's constant is. I know that it is the number 6.62607004 × 10-34 m2 kg / s, but what does this number represent?

Jared Khoo 1G
Posts: 107
Joined: Wed Sep 18, 2019 12:16 am

Re: Planck's Constant

Postby Jared Khoo 1G » Thu Oct 10, 2019 4:23 pm

Planck's constant relates the energy in one photon of electromagnetic radiation to the frequency of that radiation. m2*kg/s is the same as Joule*second, as a joule is a kg *m2*s-2, so this multiplied by frequency in Hz (or s-1) would yield energy.

John Arambulo 1I
Posts: 58
Joined: Sat Jul 20, 2019 12:15 am

Re: Planck's Constant

Postby John Arambulo 1I » Thu Oct 10, 2019 4:33 pm

Planck's constant is used to relate the energy in one photon or packet of energy (quanta) of electromagnetic radiation to its frequency. His idea was that a charged particle oscillating at a frequency (nu) can exchange energy with its surroundings by generating or absorbing electromagnetic radiation only in discrete packets of energy of magnitude . And thus, the frequency will be detected when an oscillating atoms releases a packet of energy of magnitude E into its surroundings.

Manav Govil 1B
Posts: 104
Joined: Sat Sep 07, 2019 12:19 am

Re: Planck's Constant

Postby Manav Govil 1B » Thu Oct 10, 2019 8:13 pm

Planck's constant is not really explored in depth in high school/college chem. If you would like to learn about the history of Planck's Constant, I recommend this Wikipedia article:

https://en.wikipedia.org/wiki/Planck_constant


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