Timeline for What is the meaning of the negative sign in $\Delta s^2 = \Delta x^2 + \Delta y^2 + \Delta z^2 - (c\Delta t)^2$?
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| Mar 3, 2019 at 20:42 | comment | added | Edgar Mueller | This may also help understanding: The fundamental equation of electrodynamics (FEE) has the metrics of 4-space (+,-,-,-). The simultaneous presence of positive and negative differential terms in a second-order differential operator means that its solutions are waves; in fact, the FEE is a wave equation, which has as well standing-wave solutions (eigensolutions); these represent the massive particles. | |
| Mar 3, 2019 at 18:11 | comment | added | Edgar Mueller | The question was about the meaning of the negative sign in the metric distance element (or of the three negative signs, if one likes). A more profound answer is in my other post physics.stackexchange.com/questions/451979/… | |
| Mar 1, 2019 at 17:06 | comment | added | user4552 | This doesn't really make much sense. It's true that Maxwell's equations are form-invariant under a Lorentz transformation, but if that is the point of this answer, then it's not being made very clearly. | |
| Mar 1, 2019 at 16:45 | review | Late answers | |||
| Mar 1, 2019 at 16:51 | |||||
| Mar 1, 2019 at 16:26 | history | answered | Edgar Mueller | CC BY-SA 4.0 |