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I’m an engineer, graduated with a B.E. in Electrical Engineering from the Cooper Union, and working in that field in the Greater NYC area.

My interests are varied and include computers & computer programming, science fiction & real-life space exploration, politics, and religion; see my active accounts on Stack Overflow.

Read my (very sporadically-updated) blog, or follow me on Google+.


Aug
12
asked Was the Reish Galuta considered the presumptive candidate for the Melech haMoshiach?
Aug
7
comment Does Vegan Certification Have Any Halachic Weight?
I recall a Rav saying vegan certification on shoe blacking would suffice for its use for tefillin.
Jul
24
comment מַלְאַךְ ה׳—“the angel of GOD” or “an angel”
Let me rephrase that: what would it look like if the noun were indefinite? Is there such a form at all, or could this only be expressed in a longer phrase (“an angel from among the angels of GOD”)?
Jul
24
accepted מַלְאַךְ ה׳—“the angel of GOD” or “an angel”
Jul
24
comment מַלְאַךְ ה׳—“the angel of GOD” or “an angel”
Is there also an indefinite version of the construct state?
Jul
24
comment מַלְאַךְ ה׳—“the angel of GOD” or “an angel”
@Danno, English grammar requires the article in your example, but the meaning is unambiguous without it—there’s (usually) only one king of an area. But there are many angels; does “מַלְאַךְ ה׳” refer to a specific one? Do Bereishis 22:11 & 22:15 refer to the same angel?
Jul
24
asked מַלְאַךְ ה׳—“the angel of GOD” or “an angel”
May
29
comment Can a shul be said to have a second Bimah?
See my edits, @smu.
May
29
revised Can a shul be said to have a second Bimah?
added Hebrew and link to Google translate
May
29
answered Can a shul be said to have a second Bimah?
May
14
comment How does this math work out?
@ShmuelBrin, and the bigger the city, the further from 1:4 the ratio gets. This is a good question.
May
14
comment How does this math work out?
Similarly with Soncino’s version: migrash is π × 1000²; sados are 4000² − π × 1000²; ratio is π ÷ (16 − π) ≅ 1:4. With a city larger than zero, the ratio will be greater.
May
14
comment How does this math work out?
Note that the ratio of migrash: sados is at its minimum with a 0-radius city (see my attempt at working out the math at gist.github.com/jcsalomon/5573753). Migrash is 2000²; sados are 4000²−2000²=12,000,000; ratio is 4,000,000:12,000,000 = 1:3. A ratio of 1:4 is impossible.
May
14
comment How does this math work out?
Could you please update the diagram to indicate explicitly what the various lengths are?
May
2
accepted Bar Mitzvah candle-lighting?
May
2
comment Bar Mitzvah candle-lighting?
Note: I rather suspect this is a particularly non-Orthodox practice, but this should still be within this site’s scope.
May
2
asked Bar Mitzvah candle-lighting?
May
1
comment One Challah or Two?
This was discussed, with regard to matzos backed in a large sheet, on (IIRC) Hirhurim. Will search.
Mar
28
comment Kiddush cup: stemmed or not?
There is also the “Rizhiner becher”, with leaf-shaped attachments to the stem so it can be held in the kabbalistically-preferred manner; see this picture.
Mar
16
awarded  Yearling