* The speed of light is constant: In a vacuum, light travels at approximately 299,792,458 meters per second. This speed is a fundamental constant of the universe and doesn't change.
* Reflection is a change in direction: When light reflects off a surface, it changes direction. Think of a mirror: the light bounces off at the same angle it came in.
* Energy is conserved: Reflection conserves energy. The light doesn't lose energy or gain energy during the reflection process, so its speed remains constant.
Important Note: While the speed of light remains constant in a vacuum, it can slow down when it travels through a medium like water or glass. This is because the light interacts with the particles of the medium, which slows its progress. However, once the light exits the medium and returns to a vacuum, its speed returns to its original constant value.
