nefesh elokis

/Tag: nefesh elokis

Abraham Meets Abraham from a Parallel Universe

And he [Abraham] lifted up his eyes and looked, and, lo, three men stood over against him…  (Genesis 18:2) On this blog, we often discuss the collapse of the wavefunction as the result of a measurement. This phenomenon is called the “measurement problem.” There are several reasons, why the collapse of the wavefunction – part and parcel of the Copenhagen interpretation of quantum mechanics – is called a problem. Firstly, it does not follow from the Schrödinger equation, the main equation of quantum mechanics that describes the evolution of the wavefunction in time, and is added ad hoc. Secondly, nobody knows how the collapse happens or how long it takes to collapse the wavefunction.  This is not to mention that any notion that the collapse of the wavefunction is caused by human consciousness, [...]

613 Degrees of Freedom

Passover has ended.  All Jews hastily remove their Passover dishes into special cabinets or the attic until next Passover.  After an eight-day break, home becomes filled with the aroma of freshly baked bread.  Passover leaves us with the pleasant taste of burnt matzot, memories of the Seder spent with family, and stories of the Exodus.  But did Passover really end? In the Mishnah (the precursor of Talmud), the holiday of Shavuot (Pentecost) is called “Atzeret.”  This word is familiar to us from Shemini Atzeret—the holiday that follows immediately after the seven days of Sukkot, often simply viewed as the last day (or, in Diaspora, the last two days) of Sukkot.  Either way, Shemini Atzeret is the conclusion of the festival of Sukkot.  By designating Shavuot as Atzeret, the Mishnah seems to imply that it is [...]

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