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Featured Article: Leonhard Euler

Portrait of Leonhard Euler by Johann Georg Brucker
Leonhard Euler (pronounced Oiler) (April 15, 1707 – September 18, 1783) was a prolific Swiss mathematician and physicist who applied his expertise to problems in astronomy, optics, mechanical engineering, and mechanics. He introduced some of the familiar notation still used in mathematics today, and expanded the reach of infinitesimal calculus by introducing a great number of mathematical innovations. As a religious Christian, he was deeply interested in theology.

Popular Article: Dybbuk

Dybbuk, by Ephraim Moshe Lilien (1874–1925)
In Kabbalah and European Jewish folklore, a dybbuk is a spirit of a dead person that attaches itself to a person on earth. The word "dybbuk" is derived from a Hebrew term meaning "attachment." According to kabbalistic tradition, a soul that has not been able to fulfill its function in its lifetime is sometimes given another opportunity to do so in the form of a dybbuk. Dybbuks seek out people who face similar challenges or circumstances to themselves and attach themselves to their bodies.

Did you know?

Harmandir Sahib (the Golden Temple of Amritsar) literally means "House of God" (source: Harmandir Sahib)

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