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Reference of Measurements in Halacha: Difference between revisions

From Halachipedia
added table for amah, tefach and etzbah and made other minor changes.
(added table for amah, tefach and etzbah and made other minor changes.)
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===KeBaytzah===
===KeBaytzah===


#According to Rav Chaim Noeh, the [[KeBaytzah]] is 55cc, and according to the Chazon Ish, it is 100cc. <ref>Vezot HaBracha pg 6 </ref>
#According to Rav Chaim Noeh, the KeBaytzah is 55cc, and according to the Chazon Ish, it is 100cc. <ref>Vezot HaBracha pg 6 </ref>


===Revi'it===
===Revi'it===


#A [[Reviyit]] is a [[KeBaytzah]] and a half.<ref>Mishna Brurah 486:1 </ref> Therefore, Rav Chaim Noeh holds that the [[Reviyit]] is 86 grams (3 oz),<ref>Shiurei Tzion (p. 69)</ref> the Chazon Ish holds that the [[Reviyit]] is 150 grams (5.3 oz).<ref>Rav Chaim Kanievsky in Shiurin Shel Torah (p. 66) according to the rulings of the Chazon Ish </ref>, and some quote Rav Moshe as saying the [[Reviyit]] is 3.3 oz.<ref>Vezot HaBracha (Birur Halacha 1) quotes Haggadat Kol Dodi which quotes Rav Moshe Feinstein as saying that a [[Reviyit]] is 3.3 oz.</ref>
#A Reviyit is a [[KeBaytzah]] and a half.<ref>Mishna Brurah 486:1 </ref> Therefore, Rav Chaim Noeh holds that the [[Reviyit]] is 86 grams (3 oz),<ref>Shiurei Tzion (p. 69)</ref> the Chazon Ish holds that the [[Reviyit]] is 150 grams (5.3 oz).<ref>Rav Chaim Kanievsky in Shiurin Shel Torah (p. 66) according to the rulings of the Chazon Ish </ref>, and some quote Rav Moshe as saying the Revi'it is 3.3 oz. <ref>Vezot HaBracha (Birur Halacha 1) quotes Haggadat Kol Dodi which quotes Rav Moshe Feinstein as saying that a [[Reviyit]] is 3.3 oz.</ref>
#With regards to drinking [[the four cups of wine]], see the [[Required Amount of Matzah and Wine for the Seder]] page.
#With regards to drinking [[the four cups of wine]], see the [[Required Amount of Matzah and Wine for the Seder]] page.


===Kedei Shtiyat Reviyit===
===Kedei Shtiyat Reviyit===


#See [[Kedei Shtiyat Reviyit]] (the time in which a [[Reviyit]] is considered drunk together)
#See Kedei Shtiyat Revi'it (the time in which a Revi'it is considered drunk together).


==Length==
==Length==
===Amah, Tefach, Etzbah===
===Amah, Tefach, Etzbah===
 
{| class="wikitable sortable"
#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>
!Amah
#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>
!Tefach
!Etzbah
|-
|Rav Moshe Feinstein<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>
|21.25 in. (53.98 cm)
|3.54 in. (9.00 cm)
|0.89 in. (2.25 cm)
|-
|Rav Chaim Noeh<ref>Shiurei Torah (by Rav Chaim Noeh, Siman 3 Seif 25 pg 249) </ref>
|18.90 in. (48 cm)
|3.15 in. (8 cm)
|0.79 in. (2 cm)
|-
|Chazon Ish<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>
|24 in. (60.96 cm)
|4 in. (10.16 cm)
|1 in. (2.54 cm)
|}


===Mil===
===Mil===