Hello Mike,
Thanks for explaining the examples Allen gave.
Would you mind explaining what is correct and what is missing with the quote
of Michelson?
> "These sounds (250-300Hertz )are produced by the wings of the dancing bee
and are INAUDIBLE to the HUMAN EAR"( Michelsen 1987).
In other words why does Michelsen say we can not hear these sounds if we
can as you, Chris and Allen say ?
Sincerely,
Bob Harrison