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How many squares can you cou...

How many squares can you count in the given picture?

Correct answers: 115

The first user who solved this task is Neelima Subrahmanyam.

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Solitaire

Two lunatics are in the rec room of an asylum. One is playing solitaire, and the other is watching. Suddenly, the watcher says, "Hey! You just cheated yourself!"
"Ssh!" The other whispers, "Don't tell anybody, but I've been cheating myself at solitaire for years."
The first nut whispers back, "But, don't you ever catch yourself?"
"Nope", the solitaire player say proudly, "I'm way too clever!"

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Sir Ambrose Fleming

Died 18 Apr 1945 at age 95 (born 29 Nov 1849). John Ambrose Fleming was an English electrical engineer who invented, and coined the name for, the first thermonic valve (also known as a vacuum tube). It was a diode with two electrodes, that acted as a rectifier, restricting current to flow in only one direction in a circuit (patented 1904). It made use of the Edison effect— the emission of electrons from a heated metal surface. By sealing a heated filament in a glass envelope containing a vacuum, the internal movement of electrons was not obstructed by gas molecules. The second electron at high positive voltage attracted the electrons released from the surface of the first, heated, electrode. It was applied the device in circuits for the nacent telecommunications industry. His name is remembered in the Fleming “Left Hand Rule” mnemonicfor relating the directions of motion, current and magnetic field for a motor.«

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