Other animals can see parts of the spectrum that humans can’t. For example, a large number of insects can see ultraviolet (UV) light.
UV light can be used to show things the human eye can’t see, coming in handy for forensic scientists.
Isaac Newton observed that a thin beam of sunlight hitting a glass prism on an angle creates a band of visible colors that includes red, orange, yellow, green, blue, indigo and violet (ROYGBIV). This occurred because different colors travel through glass (and other mediums) at different speeds, causing them to refract at different angles and separate from each other.
Light travels very, very fast. The speed of light in a vacuum (an area empty of matter) is around 186,000 miles per second (300,000 kilometres per second).
Light takes 1.255 seconds to get from the Earth to the Moon.
Sunlight can reach a depth of around 80 metres (262 feet) in the ocean.
Photosynthesis is a process that involves plants using energy from sunlight to convert carbon dioxide into food.