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Alexander Poltorak |
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Dr. Alexander Poltorak, who holds a PhD in theoretical physics, is a noted lecturer on the intersection of science and Torah. He is Chairman & CEO of General Patent Corporation, a patent licensing firm. He served as an assistant professor of physics at Touro College and an assistant professor of biomathematics at Cornell University Medical College. He was US Co-chair of the subcommittee on Information Exchange of the US-USSR Trade and Economic Counsel. He authored A Light Unto My Path: A Mezuzah Anthology, and books on intellectual property. Follow his blogs at Quantum Torah.
A Story of Reb Yosef Nemotin
Throughout the years, Reb Yosef took care of Rabbi Levi Yitzchak’s gravesite. He’d visit, clear the weeds, and sit there reciting Psalms, often wondering sadly why the Rebbe, Rabbi Levi Yitzchak’s son, never came to visit.
Beauty is subjective. Why, then, is “beauty” the term used by scientists to describe abstract mathematical constructs?
We all try to make sense of things around us. Making sense of new experience entails relating it to one or more familiar experiences stored in our memory...
The Preface, Introduction and Acknowledgements, and Prologue for Alexander Poltorak's Mezuzah Anthology.
How a Mezuzah is Written The commandment of mezuzah requires that two portions from the Pentateuch, the chapters of Shema and Vehayah, be written on a parchment according to rigorous rules and be affixed to the right doorpost of every doorway or gate in t...
Shekhinah is called mezuzah. Just as all the foods yield to breadIn a sense that once the blessing is made for bread it exempts all other food eaten with it., all nations yield to Jews who have mezuzoth and tefillin. Commenting on the verse “Happy is the ...
Thus said R. Yohanan: One gives precedence (i.e., honor of the first entry) only in a doorway in which there is a mezuzah (or which is eligible for a mezuzah). Women are exempt from reciting the Shema and putting on tefillin,Women are generally exempt fro...
A word of caution: one may be left after reading these pages with the impression that the commandment of mezuzah is the single most important mitzvah in Judaism. While it would be flattering for the author if these writings made that impression on the rea...
Lift up your heads, O ye gates, and be ye lifted up, ye everlasting doors; that the King of glory may come in. (Psalms, 24:7-9) Happy are they that dwell in Thy House. (Psalms, 84:5) Strength and beauty are in His Sanctuary. (Psalms, 96:6) Happy is the ma...
Contemporary Jewish Italian writer and philosopher Dr. Alfonso Pacifici Alfonso Pacifici (1889-1983) Jewish-Italian writer, philosopher, lawyer. An advocate of Orthodox Judaism, he was active in attempts to revitalize traditional Jewish life in Italy. Aut...
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