60 Minutes ran a segment on Rear Admiral Hopper before her last retirement from the Navy. The highlight (from my point of view) was her using a "visual aid" to describe a nanosecond: she held up a length of wire a little less than a foot long. Most viewers probably had no idea, and most still don't, that light and radio waves take a little time to travel any distance.
Heh, there are more than a few Freepers who have said they actually got a “nanowire” from her...:)
She gave a great speech, I felt privileged. Most of the other people at the commencement had no idea who she was, but...I did!