Electro magnetic radiation
- Light is one form of energy. The light rays consist of tiny particles called photons.
- The energy carried by photon is called quantum.
- Light is one part of electromagnetic radiation
- The other parts of electromagnetic radiation are cosmic rays gama rays, X-rays, ultraviolet radiation, (UR) Infrared radiation (IR) and radio waves.
- The visible light is between 400-700nm and lies between UV and IR Radiations
- With increase in the wavelength there is a decrease in energy per quantum.
- Visible light has seven different colours (VIBGYOR)
- In the visible spectrum, it is near the region of red rays and blue rays, there will be more photosynthesis.