- The Concept of Electromagnetic Waves
- The Concept of Electromagnetic Field
- Fleming’s Left Hand Rule
- Force between Two Parallel Curent-carrying Conductors
- Applications of Electromagnetic Field
- Electromagnetic Induction
- The Laws of Electromagnetic Induction
- Eddy Currents
- Advantages and Disadvantages of Eddy Currents
The Concept of Electromagnetic Waves
Unlike mechanical waves, electromagnetic waves are waves that require no material medium for propagation. Thus, they can propagate through a vacuum or free space.
The human eye can only see light of which the wavelength lies between 3.8 ×10– 7m and 7.2 ×10– 7m. Other examples of electromagnetic radiation differ from visible light only in wavelength and in the ways of producing them. However, they all have the same velocity of value 3.0 ×108m/s.
- What are electromagnetic waves?
- Differentiate electromagnetic waves from mechanical waves.
- What is the common speed value of all electromagnetic waves?
- List the components in the electromagnetic spectrum.
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