NATURE
- Vandaele Romane
- Khan Mariyam
- El Maddahi Dounia
- Dequand Solenne
Electromagnetic waves are a method of energy transfer. They are formed by a varying magnetic field that induces a varying electric field.
Properties
- Wavelength- distance from crest to crest.
- Speed of light, 300,000 km/sec- rate of motion of crests or troughs.
- Period- Time between passage of successive crests.
- Frequency- Number of crest passages per unit time.
- Amplitude- Distance from level of crest to level of trough.
- These are waves produced by oscillating charges.
- They can travel through a vacuum or material substance.
- They are transverse in nature.
- There are seven identified classes of electromagnetic waves.
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Characteristics
Refraction
Field : Electric or Mag-netic
Field Angle
Direction during propagation
Intensity
Attenuation
Polarization: Vertical, Horizontal or Linear
Step 3
Reflexion
Step 1
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Defenition
Electromagnetic wave
