Timeline for Uncertainty principle and the energy-momentum 4-vector
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Sep 14, 2013 at 13:17 | vote | accept | CommunityBot | ||
| Sep 11, 2013 at 14:42 | answer | added | orange_soda | timeline score: 8 | |
| Sep 11, 2013 at 12:43 | answer | added | Qmechanic♦ | timeline score: 3 | |
| Sep 11, 2013 at 12:35 | answer | added | xuanji | timeline score: 4 | |
| Sep 11, 2013 at 11:41 | comment | added | Trimok | Note that the position vector $x^j$ is a "contravariant" vector, with upper indices, while momentum vector $p_i$ is fundamentally a "covariant" vector, with lower indices. Transformation laws for contravariant and covariant vectors are different. Of course, in special relativity, the momentum is sometimes written with upper indices like $p^i = m\frac{dx^i}{d \tau}$, but it hides the true nature of the momentum. This said, your expressions may be written in the compact form $\Delta p_i \Delta x^j \geq \delta_i^j \large \frac{\hbar}{2}$ | |
| Sep 11, 2013 at 11:23 | history | edited | Qmechanic♦ |
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| Sep 11, 2013 at 11:14 | history | asked | user20250 | CC BY-SA 3.0 |