IPhO' 2008 said:If we have a tank which full of water.Then,emitted the light into the tank.The speed of light is c/n . If we can run faster than c/n. We will run faster than light.
Is it possible?
russ_watters said:Well, we can't run faster than the speed of light in water, but hypothetically, if there is a material with a refractive index that causes light to travel at an apparent speed less than running speed, we could run faster.
IPhO' 2008 said:If we have a tank which full of water.Then,emitted the light into the tank.The speed of light is c/n . If we can run faster than c/n. We will run faster than light.
Is it possible?
According to our current understanding of physics, it is not possible for anything to travel faster than the speed of light in a medium. This is because the speed of light is considered to be the maximum speed at which energy, matter, and information can travel in the universe.
No, the speed of light in a vacuum is considered to be the ultimate speed limit in the universe. This means that nothing, including light itself, can travel faster than the speed of light in a vacuum.
Some theories have proposed the existence of hypothetical particles called tachyons, which are thought to travel faster than the speed of light in a vacuum. However, there is currently no experimental evidence to support the existence of tachyons.
The speed of light in a medium is always slower than the speed of light in a vacuum. This is because light travels through a medium by interacting with the atoms and particles in that medium, which slows it down.
While it is currently not possible, it is always possible that future advancements in technology and our understanding of physics could lead to new discoveries and breakthroughs that may allow for faster-than-light travel in a medium. However, this is purely speculative and would require a significant shift in our current understanding of the laws of physics.