The sun.
Greatest ???No - for us the greatest source is the sun, which is mostly visible light.X-rays do have more energy than visible light, but not as much as gamma rays.
It is a light source.
The Sun is a source of all forms of electromagnetic radiation from gamma rays to radio waves. However, the greatest amount of radiation that the Sun produces is visible light.
The Sun is a light source Something that makes light.
light source
It is certainly a source of light but it is not a practical, usable source.
A traffic light is a light source as it emits light to signal drivers when to stop, slow down, or go.
Luminous light is a light source but another name for it.
It
The moon is not a source of light because it simply reflects the suns light, therefore it is not a direct source of light
The greatest source varies on age location etc. but mine is from a drinking fountain.
A fire is a source of light energy.