Electromagnetic Spectrum

1. Visible light

1.1. Wavelength : 10^-7

1.2. Colours

1.2.1. Violet

1.2.1.1. 380–450 nm

1.2.2. Blue

1.2.2.1. 450–495 nm

1.2.3. Green

1.2.3.1. 495–570 nm

1.2.4. Yellow

1.2.4.1. 570–590 nm

1.2.5. Orange

1.2.5.1. 590–620 nm

1.2.6. Red

1.2.6.1. 620–750 nm

2. Ultraviolet

2.1. Wavelength : 10^-8 - 10^-7

2.2. Effects

2.2.1. Browning of skin

2.2.2. Produce Vitamin D

2.3. Example

2.3.1. Sunbeds

2.3.2. Sterillisation

2.3.3. Disinfection

3. X-ray

3.1. Ability to pass through many materials that absorb visible light

3.2. Wavelength : 10^-13 - 10^-8

3.3. Examples

3.3.1. Cancer treatment

3.3.2. Medical inspecation

4. Radiowaves

4.1. Smallest energy and longest wavelength of electromagnetic wave

4.2. Wavelength : 10^-1 - 10^5

4.3. Examples

4.3.1. Television Communication

4.3.2. Radio

5. Microwaves

5.1. Wavelength : 10^-3 - 10^-1

5.2. Examples

5.2.1. Microwave cooking

5.2.2. Television satellites

5.2.3. Mobile Phone

6. Infra-red Waves

6.1. Just below the visible spectrum

6.2. Wavelength : 10^-7 - 10^-3

6.3. Examples

6.3.1. IR Telescope

7. Gamma rays

7.1. Highest energy electromagnetic waves

7.2. Wavelength : 10^-14 - 10^-10

7.3. Can pass through concrete and metals

7.4. Example

7.4.1. Nuclear bomb