What number goes into the em...
[1962] What number goes into the em... - What number goes into the empty square? - #brainteasers #math #riddles - Correct Answers: 245 - The first user who solved this task is Djordje Timotijevic
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What number goes into the em...

What number goes into the empty square?
Correct answers: 245
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Why are you crying?

Two guys were sitting outside a medical clinic. One of them was crying, tears were pouring down his face.

The other guy asked, "Why are you crying?"

The first one replied, "I came here for blood test."

The second one asked, "So? Why are you crying? Are you afraid?"

The first guy replied, "No. Not that. During the blood test they cut my finger."

Hearing this, the second one started crying.

The first one was astonished and asked the other, "Why are you crying?"

Then the second guy replied, "I have come for a urine test."

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Eugen Goldstein

Died 25 Dec 1930 at age 80 (born 5 Sep 1850).German physicist who discovered and named canal rays (1886) which emerge through holes in the anodes of low-pressure electrical discharge tubes (later shown to be positively charged particles). Earlier, he coined the term “cathode ray”(1876) emitted from a cathode. He was the first to see that they could cast a shadow, and were emitted at right angles to the surface. He also investigated the wavelengths of light emitted by metals and oxides when canal rays impinge on them. When the Berlin Urania, opened in 1889 it had five scientific departments and a “science theatre,”it was Goldstein who had recommended the “hall of physics in which the visitor could experiment on his own.” Students of his who continued his work included Wilhelm Wien and Johannes Stark.«Image: The tube with which Goldstein discovered canal rays in 1886.
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