Follow My Blog

Enter your email address to subscribe to this blog and receive notifications of new posts by email.



Joseph’s Sons

And now thy two sons, who were born unto thee in the land of Egypt before I came unto thee into Egypt, are mine; Ephraim and Manasseh, even as Reuben and Simeon, shall be mine.  And thy sons, that thou begettest after them, shall be thine; they shall be called after the name of their brethren in their inheritance.  And as for me, when I came from Paddan, Rachel died unto me in the land of Canaan in the way, when there was still some way to come unto Ephrath; and I buried her there in the way to Ephrath—the same is Beth-lehem.”  And Israel beheld Joseph's sons, and said: “Wherefrom are these?”   —Gen.  48:5-8 The above narrative in the Torah portion Vayechi is quite perplexing.  It starts with a shocking pronouncement by Jacob that [...]

Hillel, Shamai and Richard Feynman

The Talmud (tr. Shabbat) discusses two opinions about the manner in which we are to light Chanukah menorah. According to Hillel, we light the first light on the first night, two lights on the second night, etc. increasing the number of lights every night. According to Shamai, we are to do the opposite – light eight lights on the first night, seven on the second night, and so on diminishing the number of lights every night (according to how many days of Chanukah are still left). The Talmud concludes, ele v’elie diveri Elokim chaim (this and that are words of the living God, i.e., both opinions are true and reflect the will of God), but the halachah (the practical law) is according to Hillel. The Ari-zal explains that whereas the law today is [...]

Chanukah Menorah, Burning Bush and Sotah

As I wrote in my previous post, Schrödinger  Menorah:  Burning  And  Not  Burning, the Lubavitcher Rebbe explains the miracle of Chanukah as a paradox of the menorah burning and not burning, thereby embodying the absolute nature of God, who is not limited by His infinity but combines all possibilities including infinitude (ko’ach bli gvul) and the finitude (ko’ach hagvul). The notion of the menorah burning and not burning easily lends itself to be cast in terms of the quantum superposition of states of burning and not burning. I couldn’t help myself to call it a Schrödinger Menorah. There a couple of problems, however, with this idea. Firstly, as the Rebbe wrote in 1971 in a letter to the editor of the Journal of the Association of Orthodox Jewish Scientists, “The idea of miracles implies [...]

Schrödinger Menorah: Burning and not Burning

The miracle of Chanukah revolves around a single-day-supply of olive oil burning for eight days during rededication of the Holy Temple in Jerusalem (Bet HaMikdash), after Maccabees liberated Israel from the occupation by Seleucid empire. There are countless explanations of the miracle of the oil lasting eight days. The Lubavitcher Rebbe offers a unique explanation. The Rebbe dismisses any explanation of the miracle that relies on the miraculous nature of the oil itself. The Rebbe maintains that, to be kosher for the Menorah, the oil had to be natural olive oil, not some miraculous oil. According to the Rebbe, the miracle was that the natural oil was burning and not burning at the same time. The Rebbe draws an analogy with the dimensions of the Ark (Aron) in the Holy of Holies (Kodesh [...]

By | December 25th, 2016|Chanukah, God, Holidays (Yomim Tovim), Uncategorized|1 Comment

One-to-Many and Many-to-One

And he arrived upon the place and lodged there all night, because the sun was set; and he took from the stones of the place, and put them under his head, and lay down in that place to sleep. — Gen.28:11 And Jacob rose up early in the morning, and took the stone that he had put under his head, and set it up for a pillar, and poured oil upon the top of it. — Gen.28:18 Rashi notes that, before Jacob lies down to sleep, the verse speaks of the plurality of stones: “he took from the stones of that place, and put them under his head.” When Jacob wakes up, the verse suddenly switches from plural to singular mentioning only one stone: “and took the stone that he had put under [...]

Chayei Sarah – where Kabbalah meets physics

And these are the years of the life of Ishmael: one hundred years and thirty years and seven years (Gen. 25,17) “You might say the ‘hand of God’ wrote that number [137]” – Richard Feynman “The mystery about α is actually a double mystery. The first mystery – the origin of its numerical value α ≈ 1/137 has been recognized and discussed for decades. The second mystery – the range of its domain – is generally unrecognized. — Malcolm H. Mac Gregor, M.H. MacGregor (2007). The Power of Alpha. World Scientific. p. 69. Kabbalah is the esoteric level of the Torah. The word “kabbalah” (קבלה) literally means “receiving” or “received [wisdom].” The gematriah (numerical value) of the word “kabbalah” is 137: Kuf (100) + Bet (2) + Lamed (30) + Heh (5) = 137. This number appears explicitly for the first time in the [...]

Big Bang

  Torah starts with two words – Bereshit bara… Bereshit in Hebrew mean “in the beginning” and bara means “created.” What is interesting is that both words begin with the same letter Bet pronounced as “b”. Another expression made of two words that describes the process of creation is Big Bang. And these two words also start with letter “b”. It could, of course, be a coincidence, but not according to Nahmanides (Rabbi Moses ben Naḥman Girondi know by his acronym as the Ramban, 1194–1270). Here is Nahmanides’ description of initial moments of the creation: …At the briefest instant following creation all the matter of the universe was concentrated in a very small place, no larger than a grain of mustard… From the initial concentration of this intangible substance in its minute location, [...]

By | October 30th, 2016|Bereishit, Bereshit, Creation, Parshah, Uncategorized|2 Comments

Unified Field Theory… and Practice

Albert Einstein had a lifelong quest – to develop a unified field theory – the theory that would describe as a single field gravity and electromagnetism (just as Maxwell unified electric and magnetic fields in a single electromagnetic field). Alas, Einstein did not succeed in this quest. Today, the goal is even more ambitious – to unify all four known fundamental forces: gravity, electromagnetism, strong and weak forces in a single model, the Theory of Everything. If the hypothetical fifth force will be confirmed, it will also need to be included in the Theory of Everything. While theoretical physicists around the world are busy working our various approaches to such Theory of Everything (which include inter alia string theory, loop quantum gravity, etc.), Jews around the world will be practicing this unification during [...]

The Fifth Force – Epilog

This post is a continuation and the conclusion of the previous post, THE FIFTH FORCE. Aside from the connection with the last week’s Torah portion, Vayelech, there is also connection with and Aseret Yimei Teshuvah (Ten Days of Repentance) and Yom Kippur. When it comes to physics of fundamental forces, there are two unresolved problems: (i) unification of gravity with the other three fundamental forces (electromagnetic, strong and weak); and (ii) discovery of the fifth force. Both problems are related to repentance (teshuvah), which comes to sharp focus on the Ten Days of Repentance (Aseret Yimei Teshuvah) and Yom Kippur. Firstly, the word “teshuva” doesn’t mean “repentance”, it literally means “return” In Kabbalah tradition, the word TeShuVaH, is read as “ToShuV H” – return of the letter “heh”. It is talking about the [...]

The Fifth Force

“Now therefore write ye this song for you, and teach thou it the children of Israel.” Deut. 31:19 The four known fundamental forces are: gravitational force, electromagnetic force, strong (nuclear) force and weak (betta decay) force. Newton first described gravitational force in his famous universal law of gravity. Today, we use Einstein’s General Theory of Relativity to describe strong gravitation fields. Electromagnetism was described in the 19 c. by Faraday and Maxwell. Strong and week forces were discovered much later, in the second half of the 20 c. Since Albert Einstein started a search for a unified field theory, unsuccessfully trying to unify (describe by a single theory) gravity and electromagnetism, the quest for a unified field theory – the “Theory of Everything” – became the holy grail of theoretical physics. Strong and [...]