# Course: Quantum Physics I

Photons, wave functions and the world of the small. 1. 1

## What is the Planck's Constant?

Here you will learn what Planck's constant is and where it occurs, as well as its exact value.

2. 2

## Photon Energy - The Energy of Light Particles

Here you will learn how to determine energy of photons and how this energy depends on the color of light (frequency or wavelength).

Questions & Answers What is the energy of one mole of photons?
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3. 3

## Photoelectric effect: How to understand the revolutionary experiment just like Einstein did

Here you will learn how the photoelectric effect is explained quantum mechanically, how the stopping voltage method works and everything else you need to know.

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4. 4

## De Broglie Wavelength of Matter Waves

Here you will learn about matter waves and how they are characterized by the de Broglie wavelength (matter wavelength).

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5. 5

## Uncertainty Relation Using a Single Slit

Derivation of the Heisenberg uncertainty relation for momentum and position using a single slit through which many electrons pass and for which the De Broglie relation holds.

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6. 6

## Bohr Model: Atomic Structure from the Perspective of Quantum Physics

The Bohr model describes the structure of atoms. It is the first model of the atom that takes quantum physics into account.

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7. 7

## Compton Scattering

Derivation of the formula for wavelength for the Compton scattering, where a photon collides with an electron.

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## Compton Scattering (Wavelength, Scattering Angle)

Practicing what you have learned... Excited Hydrogen Atom: Quantum Numbers and Orbitals

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