$\lambda=\frac{h}{p}$

Miriam Sheetz 2B
Posts: 64
Joined: Fri Sep 28, 2018 12:25 am

What is the difference between constructive and destructive interference? Are there any examples for either?

Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

### Re: Question about diffraction patterns

Constructive interference is when two waves meet in a way that their crests line up. This results in a wave of a higher amplitude. On the other hand, destructive interference is when the crest of one wave meets with the trough of the other. This results in a wave of lower amplitude.

MaggieMatern_Dis1H
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

### Re: Question about diffraction patterns

In constructive interference, the crests and troughs of two waves line up, and their respective amplitudes are added, making the amplitude of the new wave bigger.

In destructive interference, the crests and troughs are opposite to one another, and their amplitudes cancel out, making the amplitude of the new wave smaller or nonexistent.

I hope the included image helps.