P219lecture20interference - Goal To understand the basics...

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Goal: To understand the basics of interference Objectives: 1) What is interference 2) Constructive interference 3) Destructive interference 4) Path differences for complete interference
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What is interference? Interference is when a defender attacks a receiver before the ball reaches him. Err wait sorry wrong sport. Interference is when 2 waves reach the same spot. These waves will add together – thus interfering with one another. Depending on how they interfere this can be a good thing or a BAD thing.
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Constructive interference If two waves land on top of each other they can add together if their positives and negatives match up (this is called “in phase”). If the waves peak at exactly the same time, they will add together making a bigger wave. This is called constructive interference.
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Destructive interference If two waves land on top of each other they can subtract if their positives meet with the others negatives (this is called “out of phase”).
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