Electromagnetic Spectrum

1. Visible light

1.1. Can be seen by the human eye

1.2. Frequency:

2. Ultraviolet radiation

2.1. Cannot be seen or felt

2.2. Turns skin darker

2.3. Frequency: 10 to the power of 16 Hz)

3. Radio waves

3.1. Longest wavelength

3.2. Lowest frequency

3.3. Used to transmit radio and television programmes

4. Infrared

4.1. Frequency: 10 to the power of 12 Hz

4.1.1. Goal 1

4.1.2. Goal 2

4.2. Attained by stretching wavelength of visible red light

4.2.1. Session Rule 1

4.2.2. Session Rule 2

4.2.3. Session Rule 2

4.3. Absorbed by the skin, felt as heat

4.4. Used optic fibre communications, television remote controls

5. Gamma Rays

5.1. Cannot be seen or felt

5.2. Very high frequency (10 to the power of 20 Hz)

5.3. Dangerous, used to sterilise medical equipment, kill cancer cells

6. X Rays

6.1. High frequency(10 to the power of 18) Hz

6.1.1. Sub Idea 1

6.1.2. Sub Idea 2

6.2. Used for human imaging

6.3. Cannot be seen or felt

6.4. Idea 4

7. Microwaves

7.1. Low frequency (10 to the power of 8 Hz)

7.2. Used in microwave ovens and to transmit mobile phone signals