What hides this stereogram?
[1679] What hides this stereogram? - Stereogram - 3D Image - #brainteasers #stereogram #3Dimage
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What hides this stereogram?

Stereogram - 3D Image
#brainteasers #stereogram #3Dimage
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Ponderings Collection 04

Why is it called a "building" when it is already built?
Why do they call them "apartments" when they are all stuck together?
Why is there an expiration date on SOUR cream?
If you keep trying to prove Murphy's Law, will something keep going wrong?
Why does flammable and inflammable mean the same thing?
How can someone "draw a blank"?
Shouldn't there be a shorter word for "monosyllabic"?
Why is the word "abbreviate" so long?
Why did kamikaze pilots wear helmets?
What is another word for "thesaurus"?
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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.
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