The Speed of Light
The speed of light, denoted by the symbol c, is the speed at which electromagnetic radiation travels through a vacuum. In other words, it is the maximum speed at which information can be transmitted in the universe. The value of the speed of light is approximately 299,792,458 meters per second or 299,792 kilometers per second.
This speed has important implications for physics and our understanding of the universe. It is a fundamental constant of nature and appears in many equations in physics, including Einstein's theory of relativity. The constancy of the speed of light also means that time and space are relative, and that the laws of physics are the same for all observers, regardless of their relative motion.
The speed of light has practical applications in fields such as telecommunications and astronomy. In telecommunications, the speed of light determines the maximum speed at which data can be transmitted over long distances.
A spaceship is moving past us at a speed close to the speed of light. what would we conclude about time (clocks) on the spaceship as it goes by?
The correct option is D, A spaceship is moving past us at a speed close to the speed of light. They are running slower than our clocks, therefore we would draw that conclusion. we would conclude that their clocks are going slower than ours.