[ComputerGuy]

The effort to understand the universe is one of the very few things that lifts human life a little above the level of farce, and gives it some of the grace of tragedy.

Nobel Laureate Steven Weinberg

[Oberon]

...a laser pulse that lasts less than four femtoseconds (one femtosecond is one millionth of one billionth of a second)

Here's a question: How long, in inches, is that pulse of laser light?