TIL Is there anything that can exceed the speed of light?

#TIL#Is there anything that can go beyond the speed of light?

If you have studied junior high school physics, then the answer is: yes.

But… If you are a resourceful physicist, you can ask: What medium?

After all, what we usually call the speed of light at 300,000 kilometers per second is actually the state of vacuum. In air, glass, water and so on, photons need to fight with these media, and the speed will drop (but it will soon be right). In some media, some special particles can be faster than photons because of higher energy or other reasons!

For example, a high-energy muon (read as a musket) can travel through ice faster than light. And when the speed of light exceeds the speed of light, there will be a "light explosion". (Cherenkov radiation)

The picture in Figure 1 shows what happens when this blue "light burst" occurs.~

But I prefer Figure 2, which is an illustration of "I’m relieved to think that 95% of the problems are left to humans"… The cartoon was painted by the author of PhD Comic. In short, it’s a book that physicists talk about "Physics is interesting, but physicists are confused and confused."It’s full of sand carvings, cold comics and the cheapest footnotes in history that have no eggs to use… It’s very suitable for people with rugged laughter like me to haw and haw in the dead of night… Recommend…