jim rozen wrote:

Maybe you were thinking of Gunnnn diodes....

Actually, I new Dr. Gunn. He was a prof in the Solid State Physics
group at University of British Columbia. It was told around the Physics
department that on a trip to San Fransisco in his Jag, a piston
colapsed. He pulled over to the side of the road, got out the tool kit
and removed the piston and rod from that cylinder. He then carried on
on seven to 'Frisco where he could get a replacement piston.

Ted