When Jack started his middle school, his father bought a bicycle for him.Jack found a red light behind the bike, there was no battery inside, so how does the light work? Many people don’t understand how the bike light is lighting. In fact that is the reflection.
The bicycle light is made of many cellular room,each room has 3 90°reflector face . So when the coming car was illuminating the bike, all the light will reflector to the drivers. Especially the light is red, which attracted the driver much attention.