Probably similar to antennas — using phase shifting and interference.
Yes, probably, but my question was more about the glass cover and if it wouldn't basically destroy the effect?
If it is touching the glass it amplifies it, if anything. (Edit: I should say it amplifies some frequencies while attenuating others)
Yes, probably, but my question was more about the glass cover and if it wouldn't basically destroy the effect?
If it is touching the glass it amplifies it, if anything. (Edit: I should say it amplifies some frequencies while attenuating others)