# Modern Physics

## Oberlin College Physics 212

## Fall 2018

*This World Wide Web page written by
Dan Styer,
Oberlin College Department of Physics and Astronomy;*

http://www.oberlin.edu/physics/dstyer/Modern/;

last updated 13 April 2018.

Technical note: To access the links marked (PDF)
you must first download the free
Adobe
Acrobat Reader or
Open Standard software.

**Teachers:**

**Course syllabus**

**Problem assignments**

### Hints for doing well in the course

We recommend that you first do the readings,
then attend the lectures, and
then work on the problem assignments.
More tips can be found in
Study
Tips for Introductory Physics Students.
We cannot emphasize too strongly that we expect
you to *do the reading*.
Information about physics problems is available through:

### Links and Handouts

Welcome (PDF) to Physics 212 (significant figures and dimensions)

**Space and Time in Special Relativity (PDF)**

**Relativistic Limits on Rigidity and Strength (PDF)**

**Notes
on Relativistic Dynamics (PDF)**

What does it mean to "**Measure time in meters (PDF)**" or to "Set the speed of light to 1"?

**Does mass really depend on velocity, dad?** by Carl G. Adler

**The concept of mass** by Lev B. Okun

**Euler's formula (PDF)** [namely e^{ix} = cos(x) + i sin(x)]

**Intensity in interference and diffraction (PDF)**

Poisson's bright spot

**Einstein and the existence of atoms** by Jeremy Bernstein

**Invitation to Quantum Mechanics (PDF)**

Quantum mechanics simulations from PhET

Physlet Quantum Mechanics (In particular,
the simulation demonstrated in class. These work best with a 32-bit web browser such as Micro$oft's Internet Explorer.)

**Elementary particle data summary (PDF)**