On Mon, Mar 26, 2012 at 6:23 PM, Tony Harminc <[email protected]> wrote:
> 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. > That would be fun. Alternatively, have one side be inches (or mm/cm) and the other ns ... then it would actually be useful and folks could justify the cost. -- zMan -- "I've got a mainframe and I'm not afraid to use it" ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
