Resonance | Show Me The Physics

How Many Antinodes? Nodes?

standing waves real

Standing wave created by reflection

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Resonance

Kieff, Ptj, Wikipedia, public domain

C) Resonance – Building up of energy by adding small amounts of energy in time with the natural frequency of an object

If you rock back and forth
in a rhythm that matches the natural
frequency of a swing, you will build up
more and more energy.

Resonance Frequency – natural frequency that an object vibrates when disturbed

Can an opera singer really break a wine glass?

Resonance in slow motion

Salford University

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How does this demonstrate resonance?

Enrichment

Resonance

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Check Your Understanding

5 quick questions — pick an answer to see if you’re right.

1. Resonance is best described as

2. An object's resonant frequency is

3. To make a playground swing go higher and higher, you should push

4. How can an opera singer shatter a wine glass with her voice?

5. Two identical tuning forks face each other. One is struck, and the other starts to vibrate. Why?