# Standing Waves (AS Phys)

Q. Explain how standing wave is produced.

When a wave is generated from one side of a medium, it travels without transferring energy to the other end of the same medium. This makes it a non-progressive wave, because they store energy and not transfer energy. It has nodes and antinodes. These are fixed points on the wave.

Nodes are points with no oscillations of particles or they are points where waves interfere destructively. Whereas, Antinodes are points on the wave, with maximum amplitude and oscillations of particles. Each point between two nodes, has different fixed amplitude to its neighbour.

When it reaches the other end of the medium, it gets reflected and inverted. Crest becomes the trough of the reflected wave.
The two waves (incident wave and reflected wave) superimpose or interfere constructively.

Can someone tell me if it's right?
(edited 2 years ago)
Original post by Aleksander Krol
Q. Explain how standing wave is produced.

When a wave is generated from one side of a medium, it travels without transferring energy to the other end of the same medium. This makes it a non-progressive wave, because they store energy and not transfer energy. It has nodes and antinodes. These are fixed points on the wave.

Nodes are points with no oscillations of particles or they are points where waves interfere destructively. Whereas, Antinodes are points on the wave, with maximum amplitude and oscillations of particles. Each point between two nodes, has different fixed amplitude to its neighbour.

When it reaches the other end of the medium, it gets reflected and inverted. Crest becomes the trough of the reflected wave.
The two waves (incident wave and reflected wave) superimpose or interfere constructively.

Can someone tell me if it's right?

How many points is it for?

Main point IMO is that you have progressive waves of the same frequency travelling in different directions through the same medium and interfering with each other.

I'm a bit confused by your 1st paragraph - you could probably delete it and start off talking about constructive and destructive interference producing antinodes and nodes at fixed positions.
Original post by Aleksander Krol
Q. Explain how standing wave is produced.

When a wave is generated from one side of a medium, it travels without transferring energy to the other end of the same medium. This makes it a non-progressive wave, because they store energy and not transfer energy. It has nodes and antinodes. These are fixed points on the wave.

Nodes are points with no oscillations of particles or they are points where waves interfere destructively. Whereas, Antinodes are points on the wave, with maximum amplitude and oscillations of particles. Each point between two nodes, has different fixed amplitude to its neighbour.

When it reaches the other end of the medium, it gets reflected and inverted. Crest becomes the trough of the reflected wave.
The two waves (incident wave and reflected wave) superimpose or interfere constructively.

Can someone tell me if it's right?