## constructive vs destructive interference

Joanna Mendoza 3J
Posts: 20
Joined: Sat Aug 24, 2019 12:17 am

### constructive vs destructive interference

Can someone explain the difference between constructive and destructive interference and the importance of both?

JamieVu_2C
Posts: 85
Joined: Thu Jul 25, 2019 12:16 am

### Re: constructive vs destructive interference

Constructive interference refers to waves in phase. This means that the peak of one wave interacts with the peak of another, and the trough of one wave interacts with the trough of another. Thus, the resulting wave is larger in the sense that the trough is deeper and the peak is higher.

Destructive interference refers to waves out of phase. So, the trough of one wave interacts with the peak of another, and vice versa. Accordingly, the resulting wave is smaller. Or, if the waves were the same size, the waves would cancel each other out.

rachelle1K
Posts: 82
Joined: Sat Sep 07, 2019 12:16 am

### Re: constructive vs destructive interference

In destructive, the waves cancel each other out, whereas constructive adds to a wave.
With constructive, the result would be a larger wave. However, destructive would result in no wave at all, or a lesser wave than the original.

kpang_4H
Posts: 55
Joined: Fri Sep 20, 2019 12:17 am

### Re: constructive vs destructive interference

Diffraction results from constructive and destructive interference. Constructive waves are in phase, which means their crests and troughs line up with one another to result in a wave with a larger amplitude. Destructive waves are out of phase, so the resulting wave's amplitude is lower than the initial/