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VAHID BAGHERI

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Which number should replace the question mark in the circle below?

John C. Polanyi

Born 23 Jan 1929. German-Canadian chemist and educator who shared the Nobel Prize for Chemistry in 1986 (with Dudley R. Herschbach and Yuan T. Lee) for contributions to the “development of a new field of research in chemistry - reaction dynamics.” Polanyi was recognised his study of infrared chemiluminescence. In experiments on the reaction of atomic hydrogen and molecular chlorine he discovered the emission of a faint infrared light (chemiluminescence), which provided quantitative information on the vibrational and rotational energy released in chemical reactions. In 1960, he published a paper suggesting that the products of the hydrogen-chlorine reaction (and similar reactions) would act as a suitable medium for a chemical laser.«

A close shave

A man enters a barber shop for a shave.

While the barber is foaming him up, he mentions the problem he has getting a close shave around his cheeks.

"I have just the thing," says the barber taking a small wooden ball from a nearby drawer. "Just place this between your cheek and gum."

The client places the ball in his mouth and proceeds with the closest shave the man has ever experienced.

After a few strokes, the client asks in garbled speech "And what if I swallow it?"

"No problem" says the barber. "Just bring it back tomorrow like everyone else does!"

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