299,792,458 meters/second
Speed of light.
Yes, they travel some fast!
Most of the Sun's energy is radiated as light, and other electromagnetic waves. These travel at about 300,000 km/sec.; to be precise, the speed of light is exactly 299,792,458 meters per second.
Copper is opaque to light - light can not travel though it.
An object with mass cannot travel at the speed of light because as it approaches the speed of light, its energy and momentum increase infinitely, requiring an infinite amount of energy to accelerate further. This is not possible due to the limitations of mass and energy in the universe.
Nothing has been found that can.However there is a theoretical prediction of particles that can ONLY travel faster than light (at 0 energy they travel infinitely fast and it takes the addition of kinetic energy to slow them down), they are called "tachyons".
Light energy consists of electromagnetic waves that travel at the speed of light, while sound energy consists of mechanical waves that travel at a much slower speed. Light energy does not require a medium to travel through, whereas sound energy does. Light energy can travel through a vacuum, whereas sound energy cannot.
the speed of light
it can travel from 380nm [nanometres] to 740nm
Darkness is the absence of light and will therefore travel at the speed of light (6x108m/s)
yes
at the speed of light