^Micro waves
^Micro waves
(a) Produced by special vacuum tubes like klystrons & magnetrons. Due to their shorter wavelengths the microwaves don’t spread or bend around the corners of any obstacle coming in their way, hence can be transmitted as beam signals in a particular direction.
(b) Properties: Reflection, refraction, diffraction and polarization.
(c) Used in
- Radar systems used in aircraft navigation.
- In communication via satellites.
- Speed guns to determine speed of moving automobiles, cricket balls etc.
- Ovens for cooking
- In the study of atomic and molecular structure.
