Superposition Flashcards
1
Q
When does superposition happen?
A
When two or more waves pass through each other.
2
Q
What happens in superposition?
A
At the instant the waves cross, the displacements due to each wave combine, then each wave separates.
3
Q
What is the principle of superposition?
A
When two or more waves cross, the resultant displacement equals the vector sum of the individual displacement.
4
Q
What are the various displacements?
A
- When a crest meets a crest, a super crest is created, two waves reinforce each other.
- Where a trough meets a trough a super trough is created.
5
Q
What happens when a crest meets a trough of the same amplitude?
A
• Where a crest meets a trough of the sample amplitude, the resultant displacement is zero, the two waves cancel each other.
• If they are not the same amplitude the result is called a minimum.
This is an example of a destructive interference.
