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I know a word of letters thr...

I know a word of letters three. Add two, and fewer there will be! What Word Am I?

Correct answers: 32

The first user who solved this task is Djordje Timotijevic.

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April Fool's Day - Moldy sandwich

Send your kid to school with a moldy sandwich. The sandwich is fine, of course. It’s the sandwich bag that has green markings on it.

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Otto von Guericke

Died 11 May 1686 at age 83 (born 20 Nov 1602).German physicist who investigated the properties of a vacuum invented (1654) the first piston air pump to produce a vacuum. While mayor of Madgeburg, in 1663, he demonstrated that two 51 cm diameter copper hemispheres with air pumped out of their interior would be so strongly held together by the force of air pressure that teams of horses harnessed to each hemisphere were not able to pull the hemispheres apart. He studied the role of air in combustion and respiration. With his invention of the first electrostatic machine - a rotating ball of sulphur electrified by friction against his hand - he produced sizeable sparks and showed that like charges repel each other.«

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