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Louis EssenDied 24 Aug 1997 at age 88 (born 6 Sep 1908).English physicist who invented the quartz crystal ring clock and the first practical atomic clock. These devices were capable of measuring time more accurately than any previous clocks. He built a cesium-beam atomic clock, a device that ultimately changed the way time is measured. Each chemical element and compound absorbs and emits electromagnetic radiation at its own characteristic frequencies. These resonances are inherently stable over time and space. The cesium atom's natural frequency was formally recognized as the new international unit of time in 1967: the second was defined as exactly 9,192,631,770 oscillations or cycles of the cesium atom's resonant frequency, replacing the old second defined in terms of the Earth's motion.
Words of Wisdom...
Experience is something you don't get until just after you need it.
A conscience is what hurts when all your other parts feel so good.
For every action, there is an equal and opposite criticism.
To steal ideas from one person is plagiarism; to steal from many is research.
Two wrongs are only the beginning.
Monday is an awful way to spend 1/7th of your life.
The sooner you fall behind, the more time you'll have to catch up.
A clear conscience is usually the sign of a bad memory.
If you must choose between two evils, pick the one you've never tried before.
Love may be blind, but marriage is a real eye-opener.
Borrow money from pessimists, they don't expect it back.
Half the people you know are below average.