[JustaTech]

Nanosecond??? How many shakes of a lamb’s tail is that?

It's roughly the time required for light to travel one foot. That bit of information is rattling around in my head because I was involved in the development of a laser ranging system some years ago. Divide the elapsed nanoseconds by 2 (for the round trip of the laser and the reflected energy) and that's your range in feet.

[Roccus]

Is that you, Grace?

[CJ Wolf]

Mark. For a nanofoot.

[Scrambler Bob]

Thanks - I just remembered.

One day we got a lecture from RA Grace Hopper. She handed out ‘nanoseconds’, a piece of wire representing the distance electrons move in one nanosecond. About a foot long.

Mine is around in my pack-rat nest somewhere.