What S The Speed Of Light

The actual definition of the speed of light is this.

What s the speed of light. Light travels at a constant finite speed of 186 000 mi sec. A traveler moving at the speed of light would circum navigate the equator approximately 7 5 times in one second. In miles per hour light speed is well a lot. The speed of light in vacuum commonly denoted c is a universal physical constant important in many areas of physics its exact value is defined as 299 792 458 metres per second approximately 300 000 km s or 186 000 mi s it is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1 299 792 458 second.

September 2 2016 at 11 13 am. Once in 4. By comparison a traveler in a jet aircraft moving at a ground speed of 500 mph would cross the continental u s. C 1 sqrt eps0 mu0 where sqrt means the square root eps0 is the electric permittivity of free space and mu0 is the magnetic permeability of free space.

The speed of light in a vacuum is 186 282 miles per second 299 792 kilometers per second and in theory nothing can travel faster than light.