## Planck's constant [ENDORSED]

$E=hv$

Posts: 32
Joined: Sat Feb 24, 2018 3:00 am

### Planck's constant

Hi! Does anyone know where planck's constant actually comes from?

melodyso1K
Posts: 24
Joined: Fri Apr 06, 2018 11:05 am

### Re: Planck's constant

The Planck's constant relates energy in a photon of electromagnetic radiation to the frequency of that radiation. The constant is approximately 6.626176 x 10^-34 J/s and can also be shown as "h" in h=E/v.

Josian1A
Posts: 17
Joined: Tue Nov 14, 2017 3:00 am

### Re: Planck's constant  [ENDORSED]

The constant was found experimentally when Planck was studying blackbody radiation. He basically found that radiation (eg light) is emitted/absorbed in discrete energy packets (quanta). This is determined by the relationship between the frequency of radiation and Planck's constant. Here's a pretty cool video if you want to learn more about it and how it relates to Quantum Mechanics: https://www.youtube.com/watch?time_cont ... QSbms5MDvY

Vivian Gonzalez 1A
Posts: 30
Joined: Fri Apr 06, 2018 11:03 am

### Re: Planck's constant

Planck's constant came about from his studies of black-body radiation. He proposed the exchange of energy between matter and radiation occurs in quanta of energy. You can read more about this in the textbook on page 9-11.