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Faizaan Iyaazuddin

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Alfred O. C. Nier

Born 28 May 1911; died 16 May 1994 at age 82.Alfred Otto Carl Nier was an American physicist whorefinedthe mass spectrometric process to distinguish isotopes. In 1934, with Lyman T. Aldrich he applied the decay of potassium-40 to argon-40 to measure the age of geological materials. He discovered (1936-38) a number of new isotopes of such low abundance they had not been previously detected, including S36, Ca46, Ca48, and Os186. Nier showed how the ratio of radioactive isotopes of uranium and its decay products was a second method to estimate the age of rocks. During WW-II, with others, he showed (1940) that the rarer uranium-235 undergoes fission, not common U-238. Thereafter, Nier was active in the separaton of these two isotopes, important in developing atomic bombs.

John went to visit his 90 year...

John went to visit his 90 year old grandfather in a very secluded,rural area of Georgia.
After spending a great evening chatting the night away, John's grandfather prepared breakfast of bacon, eggs and toast. However, John noticed a film like substance on his plate, and questioned his grandfather asking, "Are these plates clean?"
His grandfather replied, "They're as clean as cold water can get them.Just you go ahead and finish your meal, Sonny!"
For lunch the old man made hamburgers. Again, John was concerned about the plates as his appeared to have tiny specks around the edge that looked like dried egg and asked, "Are you sure these plates are clean?"
Without looking up the old man said, "I told you before, Sonny, those dishes are as clean as cold water can get them. Now don't you fret, I don't want to hear another word about it!"
Later that afternoon, John was on his way to a nearby town and as he was leaving, his grandfather's dog started to growl, and wouldn't let him pass. John yelled and said, "Grandfather, your dog won't let me get to my car".
Without diverting his attention from the football game he was watching on TV, the old man shouted ... "COLD WATER, GO LAY DOWN!!!!"
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