![]() Named after the student, the Cherenkov radiation occurs when a particle carrying an electric charge travels faster than light through an optically transparent medium such as glass. Eventually, he was able to show that even water would glow in the presence of a lot of radiation. Initially, the light was attributed directly to radioactivity but when Cherenkov tried to isolate the effect, he realized that radiation made the sulfuric acid glow. While working with uranium salts dissolved in sulfuric acid, a young Russian physicist named Pavel Cherenkov noticed a glowing light. Learn more about how relativity is misunderstood. Though it has been established that the speed of light would slow down inside glass, the muon does not slow down when it passes through the glass and still maintains the speed of light inside. Assume a photon beam and high energy muon beam point in the same direction and travel at the same speed as light. While nothing can go faster than light in vacuum, it is pretty easy for particles to move faster than light in matter through some medium like glass. The common theory that the universe is expanding at the speed of light is incorrect and a misconception. Read on to find how statements about the speed of light can be confusing. Such assertions are backed by assumptions that are often not expressed. ![]() One such statement is that nothing can travel faster than the speed of light. By Don Lincoln, Ph.D., Fermi National Accelerator Laboratory (Fermilab) There are a few statements in science that are absolutely true. ![]()
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