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Daniela Jakubovski

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last 3 solved tasks
You have three stoves: a gas stove, a wood stove, and a coal stove, but only one match. Which should you light first?
How many cigarettes do you see in this picture?
There are 6 words hidden in the picture, can you find 1 of 6?

Chester F. Carlson

Died 19 Sep 1968 at age 62 (born 8 Feb 1906). Chester Floyd Carlson was an American physicist who invented xerography (22 Oct 1938), an electrostatic dry-copying process that found applications ranging from office copying to reproducing out-of-print books. The process involved sensitizing a photoconductive surface to light by giving it an electrostatic charge Carlson developed it between 1934 and 1938, and initially described it as electrophotography It was immediately protected by Carlson with an impenetrable web of patents, though it was not until 1944 that he was able to obtain funding for further development. In 1947 he sold the commercial rights for his invention to the Haloid Company, a small manufacturer of photographic paper (which later became the Xerox Corporation).

Pain reliever

A man went to the dental surgeon to have a tooth pulled. The dentist pulled out a freezing needle to numb the area.

"No way! No needles! I hate needles," the patient shouted.

The dentist started to hook up the laughing gas and the man again objected.

"I can't do the gas thing!” the man protested. “The thought of having a gas mask on is suffocating to me!"

The dentist then asked if the man had any objection to taking a pill.

"No," the patient said. "I am fine with pills."

The dentist said, "Here is a Viagra tablet."

The patient replied: "Wow! I didn't know Viagra works as a pain pill!"

"It doesn't," said the dentist, "but it will give you something to hold onto when I pull out your tooth."

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