« Last post by hamdani yusuf on Yesterday at 13:14:33 »
My favorite are the articles claiming STR does not predict the Sagnac effect, and it's pretty trivial to spot the errors in these papers. Why does light travel west faster than it does east? Can you explain that in STR terms without violating its premise about the constancy of light speed?I asked Gemini. does light travel west faster than it does east?
No, the speed of light in a vacuum is constant regardless of the direction it travels, whether west, east, or any other direction. This is a fundamental principle of physics established by the theory of special relativity.
It's true that Earth rotates eastward, and objects on its surface, like airplanes, can travel faster eastward than westward due to this rotation. However, this doesn't affect the speed of light itself. Light travels independently of the motion of the source or observer.
There might be some confusion due to the Sagnac effect, which is a phenomenon observed in rotating reference frames. It predicts a minuscule difference in the travel time of light depending on its direction relative to the rotation. However, this effect is incredibly small and only significant in very precise measurements with extremely sensitive equipment.
For all practical purposes and everyday situations, the speed of light remains constant and independent of direction.