In article .com,
writes
ContestID67 wrote:
I was sent a link to a gadget some college engineers-in-the-making
built. http://engenius.sece.rmit.edu.au/Abstracts/Page601.htm. It
tries to detect which way a thermal is based on temperature differences
between wing tips. Bright boys.

I have two questions;

1) Have there been other gadgets created to do the same thing? How
well did they work?

A long time ago, a Dr Brennig-Jones suggested that, because
thermals apparently produce sub-audible sound, you could use the
glider's wings as a directional microphone to "hear" where the thermal
is.

I don't think anyone took up this idea.

--
Mike Lindsay