# Physics

### Videos

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Video Level 3

## Schrodinger Equation and The Wave Function

In this quantum mechanics lecture you will learn the Schrödinger equation (1d and 3d, time-independent and time-dependent) within 45 minutes.

Content of the video
1. [00:10] What is a partial second-order DEQ?
2. [01:08] Classical Mechanics vs. Quantum Mechanics
3. [04:38] Applications
4. [05:24] Derivation of the time-independent Schrödinger equation (1d)
5. [17:24] Squared magnitude, probability and normalization
6. [25:37] Wave function in classically allowed and forbidden regions
7. [35:44] Time-independent Schrödinger equation (3d) and Hamilton operator
8. [38:29] Time-dependent Schrödinger equation (1d and 3d)
9. [41:29] Separation of variables and stationary states
Video Level 2

## Classical Double-Slit Experiment

In this video, Young's double-slit experiment with light is explained in a simple way. How the interference pattern of the double-slit is formed and which role light diffraction plays.

Content of the video
1. ⏲ [00:12] A bit of history
2. ⏲ [02:13] Setup + observation
3. ⏲ [03:43] Interference and wave path difference
4. ⏲ [05:26] Interference pattern explained
5. ⏲ [11:23] Derivation (formula for wavelength)
Video Level 1

## Electric current

In this video you will learn the basics of the electric current, i.e. the definition, its physical meaning and unit.⠀

Content of the video
1. ⏲ [00:25] Electric charges
2. ⏲ [02:11] What causes the electric current?
3. ⏲ [03:42] Formula + unit of electric current
4. ⏲ [05:43] Is one ampere a large current?
5. ⏲ [06:44] Summary
Video Level 3

## Maxwells Equations

The Maxwell’s equations are studied in the second semester of physics. Here you will learn EVERYTHING about them just within 40 minutes - explained for BEGINNERS!

Content of the video
1. ⏲ [00:14] Applications of the Maxwell equations
2. ⏲ [02:08] Electric field vector
3. ⏲ [05:12] Magnetic field vector
4. ⏲ [10:15] Divergence integral theorem - this mathematical theorem combines the volume integral of the divergence of a vector field with the surface integral of this vector field.
5. ⏲ [10:15] Divergence integral theorem - this mathematical theorem combines the volume integral of the divergence of a vector field with the surface integral of this vector field.
6. ⏲ [17:50] Curl integral theorem - this mathematical theorem combines the surface integral of the curl of a vector field with the line integral of this vector field.
7. ⏲ [23:58] The FIRST Maxwell’s equation - states that the charges are sources and sinks of the electric field.
8. ⏲ [27:46] The SECOND Maxwell’s equation - states that magnetic charges always occur as dipoles. There are no magnetic monopoles.
9. ⏲ [30:23] The THIRD Maxwell’ equation (Faraday’s law of induction) - states that a time-varying magnetic field generates an electric field and vice versa. This Maxwell equation contain also the Lenz’s rule.
10. ⏲ [35:02] THE FOURTH Maxwell’s equation - states that the magnetic field can be generated by electric currents and time-varying electric fields (displacement current)