Let There Be Light
And G‑d said: “Let there be light.” And there was light. And G‑d saw the light, that it was good; and G‑d separated between the
October 16, 2020 / 28 Tishri 5781
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ohr
Physics of Tzimtzum II — Collapse of the Wave Function
In the previous post “Physics of Tzimtzum I—The Quantum Leap”, we gave a general overview of the mystical doctrine of tzimtzum—the cornerstone of Lurianic Kabbalah.
September 11, 2020 / 22 Elul 5780
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Counting Weeks and Days
There is a Biblical Commandment to count the days between the Passover and Shavuot, the “Feast of Weeks” (a.k.a. Pentecost). We start counting on the
April 28, 2020 / 4 Iyyar 5780
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Cosmic Symphony
Strings vibrate, Souls tremble, Angels are running and returning, G‑d is touching and not touching – The rhythms of the universe… Nothing stays still… all
October 30, 2019 / 1 Heshvan 5780
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Sukkot — Bringing Time into Space
Jews have a very strange custom to take four species (Heb. arba’a minim)—a fruit of a citron tree (etrog), a branch of a date palm (lulav), boughs from the myrtle tree (chadassim),
October 18, 2019 / 19 Tishri 5780
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Chayei Sarah – where Kabbalah meets physics
And these are the years of the life of Ishmael: one hundred years and thirty years and seven years (Gen. 25,17) You might say the
November 27, 2016 / 26 Heshvan 5777
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Jacob’s Sheep: Particles, Fields and Strings, and the Architecture of Reality
Synopsis This essay reads Jacob’s agreement with Laban over the streaked, speckled, and spotted sheep as far more than an odd detail in an ancient
November 20, 2015 / 8 Kislev 5776
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