sign that reads One Nanosecond

 

Code Number: 1A10.36

Demo Title: 1 Nanosecond

Condition: Good

Principle: Units of Measure

Area of Study: Mechanics

Equipment: 

One nanosecond sign.

Procedure:

This sign is exactly the length that light will travel in one nanosecond.  The picture above is a negative image of the real thing so that the words are visible.