"wavelength of 25,000 miles found in the “trough” between the surface of the earth and the ionosphere, has nothing whatsoever to do with acoustic frequencies. "
yes maybe not acoustic but influence all other freeqs passing thru such non vacuum density.. and not really relevant again just an example of over whelming effect vs the power breaker chip label...LOL i see some use. tha air density ,particle contect,o2 concemtration,temp, amd more directly effect the acoustic wave to the ear and can be shown at any given time by calc acoustic impeadance. thats why systems sound so different at different seasons, day/night, altitudes etc.
yes maybe not acoustic but influence all other freeqs passing thru such non vacuum density.. and not really relevant again just an example of over whelming effect vs the power breaker chip label...LOL i see some use. tha air density ,particle contect,o2 concemtration,temp, amd more directly effect the acoustic wave to the ear and can be shown at any given time by calc acoustic impeadance. thats why systems sound so different at different seasons, day/night, altitudes etc.