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It runs and runs but can nev...

It runs and runs but can never flee. It is often watched, yet never sees. When long it brings boredom, When short it brings fear. What is it?

Correct answers: 68

The first user who solved this task is Linda Tate Young.

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One day two blind men started...

One day two blind men started fighting.
Pretty soon a crowd surrounded them.
Then one of the members of the crowd yelled out "I bet 10 quid on the one with the knife."
Both men ran away.

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Mikhail Semyonovich Tswett

Died 26 Jun 1919 at age 47 (born 14 May 1872).Russian botanist, the “father of chromatography,” who developed and named the adsorption chromatography technique of separating plant pigments by extracting them from leaves with ether and alcohol and percolating the solution through a column of calcium carbonate. The components of the mixture moved at different rates, producing a series of bands. He is known in particular for his study of the chlorophylls and the carotenoids. However, in Tswett's own lifetime, chromatography remained virtually unrecognized as a scientific tool. In the 1930s, it was rediscovered and then spread worldwide. The chromatography technique he invented is now widely used to separate substances from mixtures. (Also spelled Tsvet.)

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