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Who is the mysterious person i...

Who is the mysterious person in the picture?

Correct answers: 26

The first user who solved this task is Djordje Timotijevic.

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If the Pilgrims Were Alive

In class, the teacher was trying desperately to get the students to think. He asked, “If the Pilgrims were alive today, what would they be most famous for?”One student quickly responded, “Their age.”

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Helium

In 1868, Pierre Janssen discovered a previously unknown bright yellow line in the spectrum of the chromosphere of the sun during a solar eclipse he was observing from India. This was an indication of a new element. For over 30 years, it was assumed the element was only present in the sun since the spectral line was not observed in the lab until 1895 when Sir William Ramsay examined a gas released from treating the mineral cleveite. Ramsay named the new element “helium” after the greek word helios for the sun. discovered helium in the solar spectrum during eclipse.

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