tefillin

/Tag: tefillin

Mezuzah in Three Dimensions

The mezuzah is one of the few mitzvot (divine commandments) for which the Torah states its reward. In this case, the reward is long life for oneself and one's children: And you shall inscribe them on the doorposts ("mezuzot") of your house and on your gates, so that your days and the days of your children may be prolonged upon the land which the Lord swore to give to your fathers for as long as the heavens are above the earth (Deuteronomy 11:20-21). According to the Tosafot and the Shulchan Aruch, the main function of the mezuzah is to protect the house from evil. Because of this attribute, the mezuzah has been called "the coat of arms in the knighthood of God."*  To begin to understand the mechanism of this effect of the mezuzah, [...]

Tale of Entangled Goats

And he shall take the two he goats, and place them before the Lord at the entrance to the Tent of Meeting. And Aaron shall place lots upon the two he goats: one lot "For the Lord," and the other lot, "For Azazel." (Leviticus 16:7-8) In the last Torah portion, Metzorah, we learned about two entangled birds. This week, we learn about two entangled goats. I don’t know if these goats studied quantum mechanics, but they can sure teach us a thing or two about quantum entanglement. Entanglement is one of the mysteries of quantum mechanics. On a macro level, entanglement is easy to understand. Imagine a coin sawn into two halves along the plane parallel to the face of the coin. One half has only heads and the other half has only [...]

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