On 23 March 2012 11:53, Sevetson, Phil <[email protected]> wrote: > How many people here have been to one of her lectures? Where she used to > hold up 11-inch bits of wire, explaining that "This is a nanosecond" and > sometimes carried around a coil of wire that was a light-microsecond long?
I am surprised that a nanosecond ruler has not shown up as a standard scientific novelty. There are various examples of them on the net, but they are hand crafted by physics teachers and professors. What we need is a cheap plastic ruler 1 ns long, with no inches or cm or other clutter. Played straight, so to speak, as though we really used such a ruler as an everyday tool. It would just barely be feasible to have ps divisions, though the unaided eye could not use them to measure things. But 100 and 10 ps divisions would be quite usable. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
