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Bookmark or Share- quantum mechanics - Particle with spin in uniform magnetic field ...Is the following the correct interpretation: Does it simply mean that the spin around the z axis can take only two values $\frac{\hbar}{2}$ and $-\frac{\hbar}{2}$ which corresponds to counter clockwise spin around the $\hat{z}$ axis (spin up) so that the vector points up the z axis and respectively counter clockwise spin around the $- \hat{z ...
- What is the cosmic "Axis of Evil" problem? - Physics Stack ExchangeWhat is the cosmic "axis of evil" problem? Apparently it is a more modern version of the old cluster mass discrepancy problem, where masses determined by gravitational lensing are always higher than masses determined by X-ray observations. Now Sunyaev-Zeldovich (SZ) masses from Planck seem to make the problem worse. Do the SZ masses disagree ...
- What is the physical meaning of the principal axes of inertia?However, torque-free precession - or the general motion of a symmetric, non-spherical top - shows this is not the case. A symmetric, non-spherical top in general has a spin around its top axis, plus an additional spin around an axis that can make an angle with the top axis - and is, in general, non-principal.
- Moment of inertia of 4 particle system - Physics Stack ExchangeStack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- Why isn't this anomaly in the CMB taken more seriously?The effect that has been dubbed The Axis of Evil can be explained as follows. Wherever we look in the sky, we see microwave photons with a distinctive signature. Cosmologists have analyzed the phenomenon and are certain that these photons are a relic from the earliest days of the universe. They are called the Cosmic Microwave Background (CMB).
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