Sefirat HaOmer—A Study in Klal u’Prat
The forty-nine days between Passover and Shavuot are called the days of Sefira or the days of counting Omer—Sefirat HaOmer—when Jews count every day as
May 27, 2022 / 26 Iyyar 5782
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Passover (Pesach)
Collapse and Revelation
The collapse of the wave function is the process of revealing hidden possibilities. Reducing uncertainty reveals information. Until the wave function collapse, the system is
January 29, 2021 / 16 Shevat 5781
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Shavuot (in Russian)
Шавуот Праздник Дарования Торы Aлександр Полторак Закончился праздник Песах. Все евреи поспешно убрали пасхальную посуду в особые шкафы или на чердаки до следующего Песаха.
May 19, 2020 / 25 Iyyar 5780
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Sabbatical Year – when the Wavefunctions are Collapsed
The Torah portion, Re’eh, talks about the Sabbatical Year—in Hebrew, Shemitah—the Seventh year. When the Sabbatical year comes, all loans are forgiven, and Jewish servants
August 17, 2018 / 6 Elul 5778
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Passover Seder—The Arrow of Time
The Passover Seder is called seder, i.e., “order” not without a reason. It is a highly structured and orchestrated ceremony that follows the ancient script—Passover
March 30, 2018 / 14 Nisan 5778
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Pesach Sheni – in a State of Superposition
There were men who were ritually unclean [because of contact with] a dead person, and therefore could not make the Passover sacrifice on that day.
January 10, 2016 / 29 Tevet 5776
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613 Degrees of Freedom
Passover has ended. All Jews hastily return their Passover dishes to storage in special cabinets or the attic until the next Passover. After an eight-day
June 6, 2014 / 8 Sivan 5774
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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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From Purim to Passover
The Shulchan Aruch – the Code of Jewish Law – states that 30 days before Pesach (Passover) one needs to start learning the laws of
April 19, 2014 / 19 Nisan 5774
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Pesach – Time of our Freedom
The holiday of Passover – Pesach – is called zman cheruteinu– time of our freedom. As we have discussed many times on this blog (see
April 18, 2014 / 18 Nisan 5774
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Carpe Diem
As we have discussed in the post, It’s the time, stupid, Pharaoh never got the message that it’s all about mastery of time. To make
January 2, 2014 / 1 Shevat 5774
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Paradox of the Red Heifer
Speak to the children of Israel and have them take for you a perfectly red unblemished cow, upon which no yoke was laid… The cow
June 24, 2013 / 16 Tammuz 5773
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Freedom in Space, Time and Spirituality
And the entire Mount Sinai smoked because the Lord had descended upon it in fire, and its smoke ascended like the smoke of the kiln…
May 18, 2013 / 9 Sivan 5773
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Passover, Shabbat and the Principle of Least Action
There is hardly a Jewish holiday more widely celebrated than Passover (Pesach). Jews of all denominations, affiliations, and levels of religious observance, if any at
March 31, 2013 / 20 Nisan 5773
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