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Pastimes : Don't Ask Rambi -- Ignore unavailable to you. Want to Upgrade?

To: Jacques Chitte who wrote (18274)	3/3/1999 12:16:00 AM
From: JF Quinnelly	Respond to of 71178

More Useless Facts: A "jiffy" is a unit of time: 3.3357 times 10 raised to the -11 (3.3357x10^-11) seconds. So named for the length of time it takes light to travel a cm in a vacuum. During the Manhattan Project in the early '40s, the time it took for the imploding shell of uranium to reach the center of the sphere was measured in "shakes of a lamb's tail". One shake = 1x10^-8 sec. It took about three shakes of a lambs tail to get the uranium to a critical mass and initiate spontaneous fission. The strength of early lasers was measured in Gillettes, the number of blue razor blades a given beam could puncture. Thanks to Gerald B. Curtis (curtis_gb@yahoo.com) of Buckhannon, West Virginia.