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Ali Monita Coicá

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145. fuad suliman 31
146. jim white 31
147. Ali Monita Coicá 31
148. Shatheesh Chandramohan 29
149. Natasa Ilkic 29
last 3 solved tasks
What will be the missing number? (28, 33, 31, 36, ?, 39)
Can you solve this Math Puzzle?
How many cigarettes do you see in this picture?

Arthur Jeffrey Dempster

Born 14 Aug 1886; died 11 Mar 1950 at age 63.Canadian-American physicist who in 1918 built the first mass spectrometer (based on the invention of Francis W. Aston) and discovered isotope uranium-235 (1935). The mass spectrometer is an instrument that uses electric and magnetic fields to separate and measure a sample's atoms according to their mass and relative quantity. In 1935, he discovered that naturally occurring uranium, though mostly uranium-238, contained 0.7% U-235 (later used as the primary fuel in atomic bombs and reactors after Niels Bohr predicted it could be used to produce a chain reaction releasing huge amounts of nuclear fission energy). During WW II, Dempster worked with the secret Manhattan Project that developed the world's first nuclear weapons.«

Playing Doctor

Steve complained to his friend Al that lovemaking with his wife was becoming routine and boring.
"Get creative buddy. Break up the monotony. Why don't you try playing doctor for an hour?"
"Sounds great," Steve replied, "but how do you make it last for an hour?"
"Hell, just keep her in the waiting room for 45 minutes!"

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