## Planck's constant

H-Atom ($E_{n}=-\frac{hR}{n^{2}}$)

Peter Nguyen 2I
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Joined: Fri Sep 28, 2018 12:29 am

### Planck's constant

Can someone explain to me what Planck's constant means and how it relates to what we are learning?

Chem_Mod
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### Re: Planck's constant

Planck's constant is a constant that can be used to relate the energy & wavelength of an electron to its momentum. It is also used to relate frequency and wavelength of an electron to its energy.

Carlos Gomez 3H
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Joined: Fri Sep 28, 2018 12:25 am

### Re: Planck's constant

Planck's constant is equivalent to 6.63x10^-34 or 6.626x10^-34, depending on the sig figs and is measured in Joules. It is also represented by the variable "h".

Olivia Young 1A
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Joined: Fri Sep 28, 2018 12:24 am

### Re: Planck's constant

Planck's constant, which has a rounded value of 6.626 x 10^-34 Joules (or kg.m^2.s^2), is often used in quantum mechanics when determining the energy of a photon. We are currently using Planck's constant as it relates to the equation, E=hv, in which the energy of a photon (E) is equal to Planck's constant (h) multiplied by frequency (v). This constant was calculated as chemists recognized that the frequency was directly proportional to the energy of a photon.

AlyssaBei_1F
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### Re: Planck's constant

Planck's constant is used in the equation E=hv(frequency) and various others. It is equal to 6.626x10^-34 J/s

Brian Hom 2F
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### Re: Planck's constant

As others have said, Plank's constant (h) is a number we use to calculate many different things relating to quantum mechanics. We use this constant in E=hv, wavelength=h/p, E=hv/wavelength, etc

taryn_baldus2E
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### Re: Planck's constant

Planck's constant is a number used in quantum mechanics that displays the proportionality found between the energy and frequency of a photon.

Karan Thaker 2L
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Joined: Fri Sep 28, 2018 12:26 am

### Re: Planck's constant

the meaning and significance of it, is that it relates wave frequency and levels of energy. (J/S)