measurements relating to the performance of different Mitzvot

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12
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1answer
139 views

Bracha after an earthquake

Per the Artscroll Siddur after an earthquake we make a Bracha "Oseh Maaseh Breishis". Up to how long after the earthquake can you make this Bracha? (sources please)
8
votes
1answer
77 views

Are bushes acceptable for elevations that require a maakeh, a fence?

If evergreen bushes span the entire length of a side of a porch, at about waist-height for someone on the porch, do the bushes remove the need for a railing? The difference being that a railing can be ...
7
votes
1answer
198 views

What height porch requires a railing?

What are the different opinions of heights (in American or metric units) that requires a railing for the side of a porch?
6
votes
2answers
289 views

How many T'fachim make up an Ama?

Is it possible to convert between Torah measurements? Specifically, T'fachim & Amot, (cubits) so I can figure out the size of the luchot (tablets) within the Aron Hakodesh (ark). (The Luchot are ...
9
votes
3answers
205 views

What is the Minimum Width of Tefillin Straps?

What is the minimum width of tefillin straps? For example: if one's tefillin straps partially tore, how much is required to remain for the tefillin to remain Kosher?
5
votes
2answers
159 views

Why is the right strap longer than the left strap by the Tefilin Shel Rosh?

What is the reason that the right strap is longer than the left strap by the Tefilin Shel Rosh?
5
votes
2answers
210 views

What is the proper length of the Tefilin Shel Rosh straps?

How long are the Tefilin Shel Rosh straps supposed to be? What is the minimum Shiur and what is the maximum?
5
votes
5answers
145 views

How was flour measured in the bes hamikdash?

Modern cooks will tell you that the way to measure flour is to scoop flour with a scoop whose volume is known, and then to shave any excess off the top. (However, liquids are measured by pouring into ...
14
votes
6answers
2k views

Is a rare steak kosher?

If you have a steak medium to rare, such that it's still pink in the middle, is it kosher? At what point is meat cooked enough?
7
votes
5answers
373 views

K'zayis as a weight measurement

The label of the one-pound box of Cohen Halperin Shmura Matza reads: משקל כל מצה כשיעור כזית In English (with some Hebrew thrown in, in transliteration, of necessity), that's: The weight of ...
16
votes
2answers
173 views

Hagalah in Denver?

In high-altitude cities, water boils at a lower temperature than the standard 212 degrees Farenheit. For example, in Denver the boiling point is about 203 degrees. Can one kasher utensils with hagalah ...
8
votes
2answers
87 views

Why 30 days of preparation for a חג

Why exactly 30 days to review the laws of the upcoming holidays? Is there anything about the number 30 that makes it significant?
3
votes
3answers
92 views

Ad Dlo Yoda measurments

What are the many Halachic options of doing the Mitzvah of drinking on Purim please quote sources? Meaning what are the diffrent the definitions of ad Dlo Yoda?
3
votes
1answer
97 views

How big was a traditional hamentash?

When shopping these days, it appears that a "normal hamentash" is about 2 inches or more per side, and "mini hamentashen" are about 1" per side. Is it just me, or did it used to be that the 1" ones ...
4
votes
2answers
150 views

Measurements used in Halacha

What is the underlying argument between the Chazon Ish and Rabbi Chaim Naaeh and Reb Moshe Feinstein? I know they argue in amounts, but what is the underlying argument? How did each get the ...
8
votes
3answers
1k views

Cash value of 'perutah'

How much is a 'perutah' worth in modern currency?
4
votes
0answers
148 views

Using Liquor for Kiddush [duplicate]

Possible Duplicate: Minimum Shi'ur for Kiddush on liquor Are you allowed to use other alcohols outside of wine for kiddush and how much must be used? really what i don't understand is ...
4
votes
2answers
1k views

What is the actual temperature of Yad Soledes?

What is the actual temperature of Yad Soledes?
3
votes
2answers
139 views

How to measure Menorah height

A menorah should preferably be within 10 tefachim from the ground (though higher than 3 tefachim). Are these ten tefachim measured to the base of the menorah, or to its top, or to the actual level of ...
14
votes
4answers
783 views

Why do we say “You should live till 120”?

Prior to the Mabul people lived for hundreds of years. After the Mabul lifespans shortened although we see that the Avos lived in the 180 year range. In the Pasuk in Tehilim we say Yemei Shenoseinu ...
5
votes
3answers
282 views

Sechach supported partially by metal

For those who are careful to only support their sechach on sechach-eligible materials, how much does it matter if a small amount of the sechach inadvertently rests on non-sechach-eligible materials? ...
8
votes
3answers
521 views

Is human blood treif?

OK, I know it isn't kosher, but what is the shiur? And do we hold "chetzi shiur assur min haTorah"? For an application, what if you get a cut while hiking in the woods; is it assur to clean the wound ...
3
votes
2answers
168 views

Machatziz hashekel

How much money is a Machatziz hashekel.
3
votes
2answers
130 views

Shalom alecha rebbi (u'mori)

What is the significance of the time it takes to say Shalom Alecha Rebbi (U'mori)?