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Andrew John McKechnie

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194. Taylor Hysmith 17
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196. Andrew John McKechnie 16
197. John Callahan 16
198. Priyaa Arunachalam 16
last 3 solved tasks
Find 1 of 7 Words Hidden in the Picture.
What comes next in the series? (5, 20, 380, 144020, ?)
Who is the mysterious person in the picture?

Californium coal monitor

In 1969, the use of californium-252 radioactive material in monitoring the sulphur content of coal was announced by the Atomic Energy Commission. Using this intense neutron source to measure the sulphur content of coal, as it moved on a conveyor belt through a coal processing plant, would enable better control of the air pollution caused by burning coal. When coal is burned, for example at electrical power plants, its sulphur is released as sulphur dioxide, a pollutant which needs to be reduced, because it contributes to acid rain. In turn, this results in acidified soils, forest damage and building corrosion. A shipment of 18 micrograms of the isotope had been sent from its Savannah River plant to South Carolina to the Bureau of Mines research centre at Morgantown, West Virginia. (A microgram is one millionth of a gram.)«

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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