Electromagnetic Spectrum

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Electromagnetic Spectrum 作者: Mind Map: Electromagnetic Spectrum

1. Microwaves

1.1. Wavelength

1.1.1. 3.0 cm to 1.0 mm

1.2. Requires water molecules to heat things

1.3. Uses

1.3.1. Mobile phones

1.3.2. Microwave oven

1.3.3. Television satellite and dishes

1.3.4. Radio devices

2. Visible light

2.1. Small part of ES

2.2. Uses

2.2.1. Optic fibers

2.2.1.1. Medical Uses

2.2.1.2. Telecommunications

3. Ultraviolet

4. X-ray

5. Features

5.1. Not mechanical waves

5.2. Not carried as vibrational energy of oscillating particles

5.3. Carried by oscillating electrical and magnetic fields

5.4. Travel at the speed of light in a vacuum

5.4.1. 3 x 10^8 ms^-1

6. Radiowaves

6.1. Longest wavelength

6.1.1. 3.0 m

6.2. Smallest energy

6.3. Requires proper instruments to detect

6.4. Uses

6.4.1. Entertainment

6.4.2. Recreation

6.4.3. Exploration of space

6.4.4. Communication

7. Infa-red waves

7.1. Wavelength

7.1.1. 1.00 mm to 8 x 10^-7 m

7.2. Uses

7.2.1. Remote control

7.2.2. Infa-red asers

7.2.3. Infa-red telescopes

7.2.4. Photographic films

7.2.5. Satellites

7.2.6. Infa-red gogles

8. Gamma rays