Conversation so far:
What was an anecdote about Hopper?
Grace Hopper is famous for her nanoseconds visual aid.
What did she use for her nanoseconds visual aid?
She started handing out pieces of wire that were just under one foot long (11.80 inches = 300 millimeters)--the distance that light travels in one nanosecond.

Question: Did she use any other visual aids?
Self-contained rewrite: Did Grace Hopper use any other than nanosecond visual aids?