Mystery #3Tier 2-3radio waves resonance
How does a radio pluck one station out of all the signals in the air at once?
Right now the air around you is crammed with invisible radio waves: dozens of stations, all arriving at your radio at the very same time, all mixed together. Yet when you turn the dial you hear just one, clear and alone. How does the radio pick a single station out of the crowd and ignore all the rest?
Your guess
How do you think the radio chooses just one station?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.