Derrick Steed wrote in message ...
Uri Saovray wrote:
So, if the experiment had them sense the altitude in a pressure
chamber, and if whatever they use for thermalling is the same as
sensing altitude, this precludes all the "G-force" and vertical
accelerometers theories mentioned he you can fool a vario in a
stationary pressure chamber, but not an accelerometer ...

But you CAN fool an accelerometer in a uniformly ascending mass of air, but
not a vario...

Rgds,

Derrick Steed

I have just started to read this thread and became interested in the
various theories on how birds sense thermals. I would like to quote
from Phillip Wills well known book "On Being A Bird" where he contends
that soaring birds hear thermals. He goes on to say that "the birds
ear drum is anchored from the opposite side (from that of man) so is
streched by decreasing pressure, thus in all likehood giving him a
sensation when he climbs." For those interested this is from page 29
Paragraph 3. If you haven't read this book, shame on you!

Lorry Charchian (LJ)