List: time-nuts@lists.febo.com
From: Lux, Jim (337C)
Re: [time-nuts] Accurate 1 pps signals
Wed, Aug 19, 2009 4:23 PM
being 1E-24 cm^2 or a shake being 1E-8, both being from early nuclear weapons development, and essentially a rounded value for some useful size: cross-section for a nuclear reaction, and generation time for fission, respectively) (I understand from some casual googling that the gnat's ass is used by machinists to refer to a tenthousandth of an inch/tenth of a mil