Characteristic of light

• Electromagnetic spectrum it consist of range of elecromagnetic wave
• electromagnetic spectrum is arrange: lowest to highest frequency
• Radio wave has the lowest frequency and carries the least energy
• Microwaves is used to transmitting or receiving signals by a celluar phone
• Microwaves is used for cooking and heating food
• Visible light can be detected by a human eye
• Visible light contains six colors
• Wavelength is measured in nanometers (nm)
• ultraviolet is emmited from the sun
• ultraviolet has the shorter wavelength than the other violet light, but has the highest frequency