Well, it's very interesting to hear about Wheatstone...I love to have my students do the circuit analysis of the Wheatstone bridge and I have used it in various applications in the laboratory (for finding unknown resistances).

My mate, Desert Dancer, is the player of a concertina based on Wheatstone's invention, which would be a much more pleasant time for my students, if they could hear it played rather than doing the circuit analysis.

Astro