I spy a couple of udus on the studio floor! Exploit Helmholtz resonate, if I'm not mistaken.
John Naylor
@johncnaylor.bsky.social
195 followers 131 following 514 posts
Interested in the physics of sights and sounds in nature. Author of “Out of the Blue, A 24-hour Skywatcher’s Guide”, “Now Hear This, A Book About Sound” & "The Riddle of the Rainbow"
