Speed of light exceeded?
It has been a long gap since the last post. I was traveling for 2 weeks, and I was planning on some posts, but this one that I saw a couple of hours ago needed an instant update.
Scientists at CERN (Eurpoean Organisation for Nuclear Research), which is doing the Large Hadron Collider experiment, have reported that some particles have been found to be travelling faster than speed of light. Reports say that the result has been verified, but also that the scientists themselves are skeptical about the result and want others to do tests and confirm it.
To see why this is too good to be true, there are two things. One is that, Physics had looked at the speed of light being the upper limit as a fundamental fact and that for any particle to travel faster than speed of light, it must have infinite energy. Hence it was considered impossible to travel faster than the speed of light.
If you have read my previous post about the speeed of light, I had mentioned that for a particle travelling closer and closer to the speed of the light, time starts running slower and slower. When you reach the speed of light, time stops flowing. But now if there are particles faster than the speed of light, does that mean that time is running in reverse for them? Are they travelling back in time? This is another reason why the result is perplexing.
Of course, I dont understand much of these concepts, but if this result turns out to be true, it could be a terrific advance in Physics. So let us keep a watch on this.