The Mystery of the Eighth Day
And on the eighth day, the flesh of his foreskin shall be circumcised. Leviticus 12:3 In the Torah portion of Tazria, we are commanded to
April 14, 2024 / 6 Nisan 5784
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spacetime
Time and Space as Emergent Phenomena — Abstract
The current Torah portion Beshalach tells about the splitting of the Sea of Reeds. As I discussed in my essay, “Collapse and Revelation,” the splitting
January 25, 2024 / 15 Shevat 5784
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In the Beginning — It’s All About Change
In the beginning G‑d created the heaven and the earth. (Genesis 1:1) The first verse in the Torah is key to understanding the fundamentals
March 11, 2020 / 15 Adar 5780
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The Tree of Life and Wave Mechanics
As we discussed in the earlier post, The Tree of Knowledge as a Metaphor for Superposition of States and Heisenberg’s Uncertainty Principle, the Heisenberg uncertainty
December 30, 2019 / 2 Tevet 5780
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Space – Between the Future and the Past
Meditations on the Maaseh Merkavah – I We do science by studying nature. We study physics in a lab, peering into space or working out
June 13, 2019 / 10 Sivan 5779
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Brit Milah in Six Dimensions
Sefer Yetzira speaks of three dimensions: Olam, Shanah, and Nefesh (Sefer Yetzirah, 6:4.) Olam means “world” and signifies space. Shanah means “year” and signifies the dimension of
September 18, 2018 / 9 Tishri 5779
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Four Cups and Three Matzoth
On Seder night we drink four cups of wine and eat three matzoth. Why four cups and not three? Why three matzoth and not four?
April 20, 2014 / 20 Nisan 5774
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Tumah and Taharah
The Hebrew words taharah and tumah, which are the subjects of the Torah portion of Chukat (Numbers 19:1–22:1), are usually translated as ritual purity and
June 19, 2013 / 11 Tammuz 5773
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On the Nature of Time and the Age of the Universe
Presented at the International Torah and Science Conference in Miami International University on December 18, 2005 Alexander Poltorak Introduction. This is the third in
August 15, 2012 / 27 Av 5772
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