Skip to main content

Questions tagged [shiurim-measurements]

measurements relating to the performance of different Mitzvot

Filter by
Sorted by
Tagged with
15 votes
4 answers
7k views

Cash value of 'perutah'

How much is a 'perutah' worth in modern currency?
Dave's user avatar
  • 21.1k
8 votes
2 answers
2k views

Minimum Shi'ur for Kiddush on liquor

What is the minimum Shi'ur (volume) of a cup required for making Kiddush on liquor? Is there a smaller amount required than there is for wine? What is the minimum Shi'ur of the liquor that one is ...
Seth J's user avatar
  • 41.7k
5 votes
1 answer
412 views

Minimum amount of food for Beracha Rishona

I've heard much discussion about minimal amounts of food to qualify as eating (eg. this discussion about how much Matza to eat at the Seder). How much would one need to eat in order to say a Beracha ...
Double AA's user avatar
  • 99.8k
5 votes
1 answer
5k views

How long does one say Kaddish for a parent?

For example, if one's parent died on 1 Nissan, and was buried on 2 Nissan, what is the last day on which kaddish would be said for them?
Jeremy's user avatar
  • 8,934
16 votes
2 answers
2k views

Does the Holy Ark weigh 4 tons?

I did some calculations, based on the following measures: The Aron was 2.5 x 1.5 x 1.5 Amahs The gold was 2.5cm thick (a finger) for the ark and 10cm thick (a Tefah) for the Kapores, at 19.3 g/cm3 ...
Al Berko's user avatar
  • 26k
15 votes
2 answers
663 views

How big, and what exactly, is "Kedei Kelipah"?

{Kedei Kelipah is a term used in Kashruth for the amount of something that needs to be removed in order to allow one to treat the remnant as Kosher. (This only applies under certain conditions, which ...
Seth J's user avatar
  • 41.7k
12 votes
5 answers
8k views

What is the absolute minimum length for peyos?

I have often heard that 1/4th of an inch is the minimum length of the hairs in the peyos area. For example, that is mentioned in an answer to a previous question: How to advise your barber My ...
Kordovero's user avatar
  • 4,207
10 votes
3 answers
2k 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 ...
Jeremy's user avatar
  • 8,934
7 votes
5 answers
2k 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 ...
msh210's user avatar
  • 73.4k
4 votes
3 answers
523 views

Shiur of "Miut Hamatzui"

A "miut hamatzui" is a phrased used to express a case where because of a small concern that something exists, or might happened, or does happen that the halacha is affected by this. An example is if ...
Yehoshua's user avatar
  • 16.1k
4 votes
2 answers
4k views

What is the actual temperature of Yad Soledes?

What is the actual temperature of Yad Soledes?
Gershon Gold's user avatar
11 votes
1 answer
981 views

How obligated is one to say Kaddish for a deceased relative?

People often talk about an obligation -- Chiyuv -- to recite Kaddish at every opportunity for some time after the death of a relative. (Which relatives are obligated and for how long does not seem ...
Double AA's user avatar
  • 99.8k
10 votes
2 answers
656 views

No mitzvah to wear tefillin every day?

I heard that the Bet HaLevi and the Peri Megadim hold that there is no Mitzva for a person to don Tefilin everyday. Can someone source these opinions and explain exactly what they are meaning to say?
Hacham Gabriel's user avatar
10 votes
3 answers
773 views

Saying 100 Berachoth in a day

What is the source for the idea that one should say 100 Berachoth in a day, and how serious of an obligation is this? Is it mandatory, is it laudatory, or is it merely a nice idea?
Seth J's user avatar
  • 41.7k
4 votes
2 answers
528 views

Machatziz hashekel

How much money is a Machatziz hashekel.
cookie monster's user avatar
4 votes
6 answers
1k views

Is there a minimum size that a Tallis Kattan has to be?

Is there a minimum size that a Tallis Kattan has to be in order to be Yotzei the Mitzva of Tzitzis according to all Poskim? If there is a minimum size, what is it?
Gershon Gold's user avatar
2 votes
2 answers
2k views

Upper limits of "kovea itim"

It is known from the gemara (Shabbos 31a and cited in maamar Toras HaBayis ch. 1, among other places) that when a person dies, he is asked if he had set times for learning. I know that these times can ...
b a's user avatar
  • 24.8k
18 votes
6 answers
14k 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?
Curious George's user avatar
17 votes
3 answers
972 views

Eating out Friday night of Chanukkah

If one is lighting Chanukah candles inside (for whatever reason) relying on the publicizing to himself and his family, then what should he do on Friday night if he is eating out? Must he make the ...
Double AA's user avatar
  • 99.8k
10 votes
3 answers
1k 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?
yydl's user avatar
  • 38.6k
10 votes
2 answers
6k views

18 minute Matzah?

Are there sources EXPLAINING why we have to make matzah within 18 minutes? I understand having a time limit if in fact the reason we eat matzah is to reenact the speed which we left Egypt (that ...
morah hochman's user avatar
5 votes
2 answers
432 views

Minimally sized kiddush cup for sale

I read that a reviit (the minimal size for a cup used for kiddush, havdala etc) is 86.4 mL according to the generally accepted view (see here for options). Does anyone know where I can get a cup that ...
Double AA's user avatar
  • 99.8k
2 votes
1 answer
878 views

Regarding chametz, what is considered "not fit to be eaten by a dog"?

Regarding whether something needs to be considered chametz or not, there is a general rule of ראוי לאכילת כלב - i.e. - if a dog wouldn't eat it, then it's not considered food and therefore it is not ...
DanF's user avatar
  • 70.7k
17 votes
2 answers
317 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 ...
Dave's user avatar
  • 21.1k
13 votes
3 answers
1k views

Is there a "5 second rule" for foods becoming non-Kosher?

OK so I don't actually mean a 5 second rule. But is there an amount of time that it takes for something hot that comes in contact with a non-Kosher utensil or surface to become not kosher? For ...
jim's user avatar
  • 878
11 votes
2 answers
194 views

Is there a halachic time limit for sending an organization its charity box money?

Many Jewish organizations distribute tzedaka (charity) boxes. A few that I know tell people, "collect the money and at some point, empty the money and mail us a check." Let's say someone leaves this ...
DanF's user avatar
  • 70.7k
7 votes
1 answer
342 views

What is the shiur for anointing on Yom Kippur?

Is there a minimum shiur to be chayav (liable) for anointing on Yom Kippur, and, if so, what is it? The gemarah (Yoma 76b) seems to learn it out as a comparison to food consumption: would that mean it ...
not-allowed to change my name's user avatar
6 votes
2 answers
374 views

What is a source that allows one to treat one's house as all within four amos?

I am after a source that allows one to treat one's house as all within four amos l'chatchila, with respect to nagel vasser (hand washing in the morning).
Moshe Yitzhak's user avatar
6 votes
1 answer
1k views

How much of a minimal sized kiddush cup must be consumed?

If someone uses a kiddush cup that is exactly (or close to) the bare minimum (see this question) needed to fulfill the obligation, how much of that cup must he drink? Do the different times one must ...
Menachem's user avatar
  • 44.6k
5 votes
2 answers
733 views

Is the shiur called a "k'beiah" or a "k'beitzah"?

Is the shiur the size of an egg properly called a k'beitzah ("כביצה") or a "kebeyah" ("כביעה" maybe)? If "כביצה" is correct, as I think it is, then why do people sometimes say "כביעה"?
SAH's user avatar
  • 19.9k
5 votes
2 answers
2k views

Challah Loaves on Shabbat have a minimum size?

In this article regarding the Shabbat Challah loaves, The Shmirat Shabbat KeHilchata (vol. II 55:5) is quoted as saying: The loaves must each be at least the size of an olive Normally, the size of ...
Menachem's user avatar
  • 44.6k
4 votes
2 answers
282 views

Shalom alecha rebbi (u'mori)

What is the significance of the time it takes to say Shalom Alecha Rebbi (U'mori)?
shlomo's user avatar
  • 3,107
4 votes
2 answers
741 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?
Gershon Gold's user avatar
4 votes
2 answers
318 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 ...
SimchasTorah's user avatar
  • 33.3k
3 votes
1 answer
430 views

How large was the menorah?

This question asking why the menorah didn't have rings and staves for carrying reminded me that, unlike with the other mishkan objects, we're not given any dimensions for the menorah. I've always ...
Monica Cellio's user avatar
3 votes
1 answer
182 views

Soldier's Shovel

Is there a shiur for the item the soldier is obligated to carry in Devarim 23:14? וְיָתֵד תִּהְיֶה לְךָ עַל אֲזֵנֶךָ וְהָיָה בְּשִׁבְתְּךָ חוּץ וְחָפַרְתָּה בָהּ וְשַׁבְתָּ וְכִסִּיתָ אֶת צֵאָתֶךָ ...
Clint Eastwood's user avatar
3 votes
2 answers
632 views

Figuring out a K'zayit by weight/volume of ingredients

In this question, I learned that one measures the amount of flour used to determine whether challah separation is necessary. Here I learned that there is a difference of opinion between (some) ...
Menachem's user avatar
  • 44.6k
3 votes
2 answers
680 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 ...
Dave's user avatar
  • 21.1k
2 votes
2 answers
499 views

Where does the contemporary measurement of a Kezayit come from?

According to the Nodeh B'Yehuda and the Chazon Ish, in order to calculate the size of a kezayis (which apparently is based on the size of an egg), we must double the size of our contemporary eggs. (...
Shmuel's user avatar
  • 10.6k
1 vote
2 answers
11k views

What is Omer and how much is it?

My understanding is that Omer is a handfuls, which is about 1 US Cup or 236g. This is exact amount needed to produce bread for one day for one healthy adult. What do traditional sources say an Omer ...
Aleksandr Sigalov's user avatar
1 vote
1 answer
790 views

Which shita are those wearing extra long tallit katan following?

Some rabbonim are wearing really long and large talith katan. For example Rav Shmuel Auerbach shlita (picture below). Rav Elyashiv ztl used to wear a very long one too. Which shita are they ...
Frank's user avatar
  • 1,171
13 votes
1 answer
349 views

What is the hallachic definition of randomness?

A new Shabbat-friendly technology, KosherSwitch, uses randomly timed light pulses to create various safeks, so that flipping the switch does not hallachically count as switching the light on, even in ...
Daniel Moskovich's user avatar
13 votes
1 answer
781 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)
Gershon Gold's user avatar
11 votes
1 answer
3k views

Kapparos on money - How much?

If one does the Minhag of Kapparos on money, how much money should be used for each person? (Sources.)
Gershon Gold's user avatar
10 votes
1 answer
873 views

Is ice considered food or drink in Halacha?

Is ice considered food or drink in Halacha? So for example, if one would eat an kezais of ice on yom Kippur, but it would not be equal to a reviyis, would he be liable for a chatas?
feedme's user avatar
  • 101
9 votes
1 answer
344 views

What's the Shiur of Mashehu?

Certain issurim (forbidden things) can become batel (halachically nullified) if they were unintentionally mixed in heter (permitted things). In order for this to happen, the heter must outnumber the ...
HodofHod's user avatar
  • 21.1k
8 votes
1 answer
143 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 ...
Shmuel's user avatar
  • 697
8 votes
2 answers
333 views

What is the source for washing Mayim Acharonim with only a few drops of water?

OC 181 (4) MB [10] says that when washing mayim acharonim one must wash up to the second knuckle and using a few drops does not fulfill the mitzvah at all. Shulchan Oruch HaRav 181 (4) says there is ...
Avrohom Yitzchok's user avatar
7 votes
1 answer
624 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?
Shmuel's user avatar
  • 697
7 votes
2 answers
1k 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 ...
zaq's user avatar
  • 8,974