Can you count the number of ...
[2751] Can you count the number of ... - Can you count the number of squares in the picture? - #brainteasers #math #riddles - Correct Answers: 140 - The first user who solved this task is Donya Sayah30
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Can you count the number of ...

Can you count the number of squares in the picture?
Correct answers: 140
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
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A guy was in a cave, looking f...

A guy was in a cave, looking for treasure. He found an old lamp, rubbed it, and a genie came out. The genie said "I will grant you three wishes, but your ex-wife will get double." The man agreed, and said "I wish I had a mansion." The genie granted it, and his ex-wife got two mansions. The man said "I would like a million dollars." The genie again granted it and his ex-wife got two million dollars. Then the man said, "Scare me half to death."
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Arago announces electromagnetism

In 1820, Francois Arago announced that a copper wire between the poles of a voltaic cell, could laterally attract iron filings to itself (Ann. de Chim. et de Physique., xv. p.93). His discovery came in the same year that Oersted discovered that an electric current flowing in a wire would deflect a neighbouring compass needle. Arago in the same publication described how he had successfully succeeded in causing permanent magnetism in steel needles laid at right angles to the copper wire. Arago and André-Marie Ampère, discussed and experimented with forming the copper wire into a helix to intensify the magnetizing action. However, it was not until 1825 that the electromagnet in its familiar form was invented by William Sturgeon.«
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