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6 posts tagged with physics *and* quantummechanics.

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## Documentaries about physics

What are some great documentaries (or documentary series) about physics? Note: I'm a physics nerd, and I'm picky. Explanations and caveats inside. [more inside]

## Where can I find another universe?

Physics: In the many-worlds interpretation, "there is a very large -- perhaps infinite -- number of universes." Where are they located? [more inside]

## question about noether's theorem in QM

Noether's Theorem states that if a system is invariant (degenerate/symmetric ) with respect to a certain variable, it has an associated conserved quantity - the best example is that if you can rotate the axis of a system without changing it, then angular momentum is conserved with respect to time. If you can translate your axes along a line, linear momentum is conserved in that direction. [more inside]

## Can I learn quantum mechanics?

I'm reading Quantum: a Guide for the Perplexed and I'm enjoying the graphics, history and simplification of the math and science used to explain quantum mechanics. But I'm reasonably well versed in math and science - I took a year of college physics, linear algebra, and diff eq about ten years ago. Is there any chance of me learning to understand the equations and papers of Planck and Einstein that are the basis of QM? Are there any good books that could help walk someone like me through this stuff? Or am I stuck as a layperson unless I earn a degree in math or physics?

## How are particles measured?

How are the attributes of atomic and subatomic particles measured? [more inside]

## Does Feynman's approach to QED render the observer problem moot?

This site:
http://www.skepticreport.com/print/quantum-p.htm
...suggests that Feynman's 'sum over all histories' approach to Quantum Electro-Dynamics has sidestepped the well known 'observer problem' in quantum mechanics (exemplified by the Wigner's Friend paradox). Is this true? [more inside]

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