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6 Cards in this Set
- Front
- Back
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Largest wavelength and lowest frquency |
Red |
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Radiowaves Microwaves Infrared Visible light U.V rays X rays Gamma rays |
Increasing frequency, decreasing wavelength |
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Properties of EM waves |
1. All are transverse waves. 2. All can travel through vacuum. 3. They travel at the same speed of 3×10^8 m/s. 4. They transfer energy from one place to another. 5. They all show wave properties such as reflection and refraction. |
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Application of EM waves |
* Radiowaves- Radio and tv communication * Microwaves- Satellite tv and telephone * Infrared- Household electrical appliances , tv controllers, inteuder alarms * Visible light- Optical fibres in medical uses and telephones. * Ultraviolet- Sun beds, Fluorescent tubes and sterilisation. * X- rays- Hospital use in medical imaging and killing cancerous cells and engineering applications (detecting cracks in metals) * Gamma rays- Medical treatment in killing cancerous cells and engineering applications ( detecting cracks in metals) |
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Dispersion of light |
Splitting up of white light into a spectrum. |
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Note |
Violet slows down the most, so its refracted the most. In glass, speed of red is the most. |
