Physics 11 : Waves Lab

Destructive interference:
When two waves interfere together, they have the same amplitude in opposite direction. If there are more than 2 waves interfering, the situation gets a little more complicated. when the two waves meet in this following example, they collide and go apart as crests and troughs. when two amplitude has opposite signs they will also form a wave with a lower amplitude. the following diagram shows two pulses interfering destructively. Again, they move away from the point where they combine as if they never met each other.
The shape of headphone and the material they’re made from can physically block certain sound waves is 180 degrees, it means that the wavelength is zero, which results in silence.
Constructive interference:
Constructive interference occurs when wave come together so that they are at the same point with each other. Means that their movement at a given point are in the same direction, due to the result of the amplitude at that point being much larger than the amplitude of an individual wave. After the collision, the wave came back to the original point. In conclusion, due to the Constructive inference, we were able to find a significant increase in amplitude

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