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Reference of Measurements in Halacha: Difference between revisions
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Reference of Measurements in Halacha (view source)
Revision as of 02:05, 25 April 2019
, 25 April 2019→Amah, Tefach, Etzbah
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===Kedei Shtiyat Reviyit=== | ===Kedei Shtiyat Reviyit=== | ||
# | # See [[Kedei Shtiyat Reviyit]] (the time in which a [[Reviyit]] is considered drunk together) | ||
==Length== | ==Length== | ||
===Amah, Tefach, Etzbah=== | ===Amah, Tefach, Etzbah=== | ||
# According to Rav Moshe Feinstein, the [[Amah]] is 21.25 inches (53.98 centimeters), the [[Tefach]] is 3.54 inches (9.00 centimeters), and the Etzbah is 0.89 inches (2.25 centimeters). <ref> Sh”t Igrot Moshe O”C 1:136. writes that the [[Amah]] is 21.25 inches and one can be strict to hold that it is 23 inches. Similarly, the Aruch Hashulchan YD 286:21 writes that 4 amot is one Russian ''sazhen'' which is the equivalent of 7 feet (see [https://en.wikipedia.org/wiki/Obsolete_Russian_units_of_measurement Wikipedia's page on Russian measurements]) meaning that the amah is 21 inches. </ref> | # According to Rav Moshe Feinstein, the [[Amah]] is 21.25 inches (53.98 centimeters), the [[Tefach]] is 3.54 inches (9.00 centimeters), and the Etzbah is 0.89 inches (2.25 centimeters). <ref> Sh”t Igrot Moshe O”C 1:136. writes that the [[Amah]] is 21.25 inches and one can be strict to hold that it is 23 inches. Similarly, the Aruch Hashulchan YD 286:21 writes that 4 amot is one Russian ''sazhen'' which is the equivalent of 7 feet (see [https://en.wikipedia.org/wiki/Obsolete_Russian_units_of_measurement Wikipedia's page on Russian measurements]) meaning that the amah is 21 inches. [https://asif.co.il/download/kitvey-et/kol/kol-30/1-29.pdf Dr. Gideon Freedman in Kol Bramah v. 4 p. 229] proves that the Aruch Hashulchan YD 201:3 and Mishna Brurah 358:7 both hold that the amah is 21 inches. The Aruch Hashulchan says that an amah is three quarters of a arshin and an arshin is 71.12 cm. The Mishna Brurah ties 53 russian arshins to 70.83 amot. See there for the calculations.</ref> | ||
# According to Rav Chaim Noeh, the [[Amah]] is 18.90 inches (48 centimeters), the [[Tefach]] is 3.15 inches (8 centimeters), and the Etzbah is 0.79 inches (2 centimeters) <ref>Shiurei Torah (by Rav Chaim Noeh, Siman 3 Seif 25 pg 249) </ref> | # According to Rav Chaim Noeh, the [[Amah]] is 18.90 inches (48 centimeters), the [[Tefach]] is 3.15 inches (8 centimeters), and the Etzbah is 0.79 inches (2 centimeters) <ref>Shiurei Torah (by Rav Chaim Noeh, Siman 3 Seif 25 pg 249) </ref> | ||
# According to the Chazon Ish, the [[Amah]] is 24 inches (60.96 centimeters), the [[Tefach]] is 4 inches (10.16 centimeters), and the Etzbah is 1 inch (2.54 centimeters). <ref> Shiurin shel Torah (pg 3) by the Steipler quoting the Chazon Ish but admitting that these are approximate measures because of the need to publicize the measures but not an accurate calculation. </ref> | # According to the Chazon Ish, the [[Amah]] is 24 inches (60.96 centimeters), the [[Tefach]] is 4 inches (10.16 centimeters), and the Etzbah is 1 inch (2.54 centimeters). <ref> Shiurin shel Torah (pg 3) by the Steipler quoting the Chazon Ish but admitting that these are approximate measures because of the need to publicize the measures but not an accurate calculation. </ref> | ||
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===Prutah=== | ===Prutah=== | ||
# A [[prutah]] is 1/40 of a gram of silver (which is about a few cents). However, the [[prutah]] with regards to the mitzvah of returning a lost object is discussed [[Returning_Lost_Objects#Worth_a_Prutah| here]]. <ref> S”A CM 88:1 says a [[prutah]] is a half of a pearl of barley. Shiurei Torah (Rav Chaim Noeh pg 177) and Shiurei HaMitzvot (Chazon Ish pg 65) say a [[prutah]] is 1/40 of a gram of silver (which currently is about 2.3 cents). Halachos of [[Chanukah]] (Rabbi Shimon Eider, pg 38) quotes Rav Moshe Feinstein saying that a [[prutah]] is 2 or 3 cents and not just one penny. See Halachos of Other People’s Money (Rabbi Bodner pg 150) who quotes Rav Moshe regarding a [[prutah]] for the mitzvah of returning a lost object. </ref> | # A [[prutah]] is 1/40 of a gram of silver (which is about a few cents). However, the [[prutah]] with regards to the mitzvah of returning a lost object is discussed [[Returning_Lost_Objects#Worth_a_Prutah| here]]. <ref> S”A CM 88:1 says a [[prutah]] is a half of a pearl of barley. Shiurei Torah (Rav Chaim Noeh pg 177) and Shiurei HaMitzvot (Chazon Ish pg 65) say a [[prutah]] is 1/40 of a gram of silver (which currently is about 2.3 cents). Halachos of [[Chanukah]] (Rabbi Shimon Eider, pg 38) quotes Rav Moshe Feinstein saying that a [[prutah]] is 2 or 3 cents and not just one penny. See Halachos of Other People’s Money (Rabbi Bodner pg 150) who quotes Rav Moshe regarding a [[prutah]] for the mitzvah of returning a lost object. </ref> | ||
===Asara Zehuvim=== | |||
# If someone steals someone else's mitzvah they should pay them the 10 zehuvim, which is equal to 1200 grams of silver (roughly $650 but varies).<ref>Rav Chaim Noeh (Shiurei Torah p. 379 ch. 3 n. 45) writes that the 10 zehuvim are equal to 250 silver dinar which are 1200 grams of silver.</ref> | |||
==Time== | ==Time== | ||
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===Yad Soledet Bo=== | ===Yad Soledet Bo=== | ||
# For purposes of cooking on Shabbat and Kashrut, Yad Soledet Bo is certainly hotter than 113 degrees | # For purposes of cooking on Shabbat and Kashrut, Yad Soledet Bo is certainly hotter than 113 degrees Fahrenheit. <ref>Shemirat Shabbat Kehilchata (ch. 1, note 3), Badei Hashulchan 92:151</ref> Others are concerned for anything over 110 degrees Fahrenheit and over 160 degrees is certainly yad soledet bo. <Ref>Igrot Moshe (OC 4:74 Bishul no. 3), The Laws of Kashrut p. 111). [https://www.yutorah.org/sidebar/lecture.cfm/788227/rabbi-hershel-schachter/kashrus-in-the-home/ Rav Hershel Schachter ("Kashrus in the Home" 2012, about min 30)] quotes Rav Soloveitchik that yad soledet bo is at least 140 degrees and no more than 160 degrees.</ref> | ||
==Links== | ==Links== | ||
