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What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Correct answers: 16

The first user who solved this task is Nasrin 24 T.

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Forty-three percent of all Ame...

Forty-three percent of all Americans say that illegal immigration is a serious problem.
The other 57 percent said, "No hablo ingles."

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Laser invented

In 1957, Gordon Gould began to write down the principles of what he called a laser in his notebook during a sleepless Saturday night. By Wednesday morning he had a notary witness and date his notebook. Therein, he had described what he called “light amplification by stimulated emission of radiation,” or, from those initials, “laser.” Unfortunately, he misunderstood the patent process, and did not file promptly. But, other scientists, Charles Townes and Arthur Schawlow, did file for a patent on their similar but independent discovery of how to make a laser. When Gould belatedly tried to get a patent, it took decades to eventually establish priority and gain what had then grown to be profitable royalties from the established laser industry.«

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