ELECTROMAGNETIC WAVES

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ELECTROMAGNETIC WAVES by Mind Map: ELECTROMAGNETIC WAVES

1. wavelength: 1.00mm to 8 x 10-7 m

2. COMPONENTS OF ELECTROMAGNETIC WAVES

2.1. RADIOWAVES

2.1.1. longest wavelength

2.1.1.1. 3.0m

2.1.2. smallest energy electromagnetic wave

2.1.3. require special instrument for detection

2.1.4. USES

2.1.4.1. entertainment

2.1.4.1.1. televisions

2.1.4.1.2. radio

2.1.4.1.3. remote control toys

2.1.4.2. unmanned submarines

2.1.4.2.1. detect pathways

2.1.5. range of frequencies

2.1.5.1. 300 GHz to as low as 3 kHz

2.1.6. travels at speed of light

2.2. MICROWAVES

2.2.1. wavelength: 1.0mm to 1.0m

2.3. INFR-RED WAVES

2.3.1. heat waves

2.3.2. USES

2.3.2.1. IR laser

2.3.2.2. TV remote control

2.3.3. wavelength

2.3.3.1. 1 millimetre to 750 nm

2.4. VISIBLE LIGHT

2.4.1. red

2.4.1.1. 7000 angstrom

2.4.1.1.1. 7000 (1.0 × 10^-10) meters

2.4.1.2. low energy

2.4.2. violet

2.4.2.1. 4000 angstrom

2.4.2.1.1. 4000 (1.0 × 10^-10) meters

2.4.2.2. high energy

2.5. ULTRAVIOLET

2.5.1. wavelength

2.5.1.1. 4000 to 10 angstrom

2.5.2. ultra-violet radiation

2.5.2.1. <3000 angstrom

2.5.2.2. most dangerous

2.5.3. USES

2.5.3.1. steriliser, e.g Koi pond

2.6. X-RAY

2.6.1. ability to knock electrons from atoms

2.6.2. USES

2.6.2.1. electron crystallography

2.6.2.2. to see inside the body without invasive surgery

2.7. GAMMA RAYS

2.7.1. highest energy electromagnetic waves

2.7.2. short wavelength

2.7.2.1. (10^-11) m to (10^-13) m

3. speed of light in vacuum

3.1. c = 3.00 x 108 m/s