stationary waves

stationary waves

1. formed whenever 2 waves of the same amplitude and wavelength travelling in opposite direction superimpose

2. a stationary wave has no speed as it does not travel and it also does not transfer energy between 2 points like a progressive wave.

3. node: a point on a stationary wave with 0 amplitude. it is formed when 2 waves meet with a phase difference of 180 degrees, at this point they combine destructively.

4. an antinode is a point on a stationary wave with maximum amplitude. it is formed when 2 waves meet each with a phase difference of 360 degrees, at this point they combine constructively

5. A microwave emitter placed a distance away from a metal plate that reflects the emitted wave. By moving a detector along the path of the wave, the nodes and antinodes could be detected.

6. separation between 2 adjacent nodes= half a wavelength

   • separation between adjacent node and antinode= quarter of a wavelength

7. stationary waves in air columns

   • fundamental frequency- the minimum frequency of a standing wave for a given system or arrangement

8. eliminating errors- tb pg 238

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