Asked by Lena

What is a real-life appliction of resonance in tubes? I've already written down musical intruments like the organ and flut and trumpet.
Answered by bobpursley
Microwave waveguide filters (either passband or blockband)
Answered by Lena
What's a microwave waveguide filter?
Answered by Damon
It allows certain frequencies of light to pass or to be blocked.

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