What is the missing number?
[5800] What is the missing number? - What is the missing number? - #brainteasers #math #riddles - Correct Answers: 50 - The first user who solved this task is Fazil Hashim
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What is the missing number?

What is the missing number?
Correct answers: 50
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
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Foreman

One day, Uncle Joe got fired from his construction job. His nephew asked him what happened.
“You know what a foreman is?” he asked. “The one who stands around and watches the other men work?”
“What's that got to do with it?” he asked.
“Well, he just got jealous of me,” Uncle Joe explained. “Everyone thought I was the foreman.”

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First Star Photograph

In 1850, the first photograph of a star was made. At Harvard Observatory (founded 1839), the observatory director, William Cranch Bond and a Boston photographer John Adams Whipple took a daguerreotype of Vega. (A daguerreotype used a copper base with a thin film of polished silver sensitized by iodine vapors to form a thin yellow layer of silver iodide. After the photograph was taken, the plate was developed in a current of magnesium vapor at 75ºC, which adhered to the light-struck parts of the plate. The plate was then fixed in sodium thiosulfate, and rinsed.) Overall, this process to take an image of a star or nebula took many hours of patient skill. Fortunately better photographic materials were later invented.
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