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Questions tagged [contemporary-halacha]

Questions regarding halachot specifically relevant to the current era.

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15
votes
5answers
983 views

Glow sticks on Shabbos

May one activate a glow stick on Shabbos? (In other words, is there a prohibition on activating the chemical reaction which produces the light in a glow stick?)
8
votes
0answers
138 views

Could there be a Halachik issue with using a DNA kit such as 23andMe?

Besides learning fun facts about one's DNA and ancestry, there's a lot of good that can come out of using one. For example: people of Ashkenazi Jewish descent can learn if they're predisposed to BRCA1 ...
8
votes
0answers
100 views

Hackintosh in Halacha

A Hackintosh is a bootlegged version of Apple's macOS loaded onto a computer that has not been manufactured by Apple and doesn't have a license to run macOS. According to Apple's macOS license, I. ...
6
votes
1answer
882 views

Can you crack and roll a boiled egg on Shabbat, even if the rolling will tear the letters printed on the egg?

Introduction In an article, Rabbi Gil Student writes that, on Shabbat: The Mishnah Berurah (340:17) and other authorities ... permit eating cake with letters. However, they do not permit cutting ...
6
votes
1answer
191 views

Retroactive psak and conversions

B"H I constantly read about Orthodox conversions which are retroactively nullified by the Israeli Rabbanut, sometimes affecting multiple generations. I am not writing this question to express nor ...
5
votes
3answers
377 views

Book on the laws of Shabbos

Which English book on the laws of Shabbos would you recommend? One that is Halacha Lemaase with footnotes that show where the Halacha stems from and the differentiating opinions.
4
votes
2answers
91 views

What are the various opinions as to what the Techeiles is?

Several opinions claim to have rediscovered Techeiles. This question refers to Ptil Techeiles and Radnyzer. What are their opinions as to the Techeiles, and are there any others?
4
votes
1answer
50 views

Do objects of idolatry contaminate?

Rambam in Mishneh Torah, Foreign Worship and Customs of the Nations 7:9 speaking about idolatrous objects says that "everything it mingled with and its identity lost" is forbidden property. Is Rambam ...
4
votes
1answer
94 views

Kohen with eyeglasses

Is having imperfect eyesight that requires the wearing of eyeglasses a problem for a Kohen? The question is two-fold: 1) Does the imperfect eyesight render him a ba'al mum (physical blemish) which ...
4
votes
1answer
196 views

Using modern electronic devices (refrigerators, air conditioners, digital water meters) on Shabbat

The Mishmereth Hashabbath institute in Israel has published a booklet which claims that using many modern electronic devices (refrigerators, air conditioners, digital water meters) are highly ...
4
votes
1answer
101 views

Shutting lights off during Chol Ha'moed, to save electricity

Preface During Shabbat, Orthodox Jewish practice is to avoid turning lights on or off. Perhaps turning lights on or off is a form of melacha. On Chol Ha'moed, melacha is sometimes, but not always, ...
4
votes
0answers
61 views

Does a broker keep the leads he worked on?

A broker works at a Merchant Cash Advance Company and the company provides leads to the broker. The broker's job is to sort through those leads, identify the ones that are really interested, build ...
3
votes
2answers
105 views

Building a Mikva Upstairs

Every Mikva I am personally familiar with is on the ground floor (first floor) or basement of its building. Let's say a congregation owns a one story building they use as their shul. They agree to ...
3
votes
2answers
59 views

When selling a house, what pieces of furniture go with it?

Based on Baba Batrah 65-67, what are the opinions in the contemporary Halacha about what pieces of furniture are considered "house" and what not, when one sells a house at a fixed price? Is selling ...
3
votes
0answers
41 views

Vaccinating and religious exemption [duplicate]

Unfortunately, there is a measles outbreak in some east coast cities where some parents refused to vaccinate their children claiming religious exemption. Since the situation has been declared an ...
2
votes
2answers
97 views

Definition of “Isko Im Hanashim”

Which modern-day poskim address what professional relationships would make one considered "Isko Im Hanashim" - working with women, in relation to Hilchos Yichud, and what are their definitions? For ...
2
votes
1answer
56 views

What Rabbinic discussion has there been about the use of contact lenses?

A chavrusa is an optician. He tells me that soft contact lenses will be squeezed when put in and taken out of the eyes. My question is what, if any, Rabbinic discussion has there been about the use ...
1
vote
2answers
131 views

Is one allowed to sleep in a room/house where there are images of JC, Virgin Mary and other avodah zarah?

Is a Jew permitted to sleep in a room/house where there are idolatrous images on the walls, such as JC, virgin Mary, etc.? What about non-Jews?
1
vote
0answers
29 views

Can one sell a future contract?

In the modern marketplace, to protect against volatility and risk, people negotiate contracts that deal with things that are yet to become a reality. However, as I read the gemara in Bava Metzia 33b, ...
1
vote
1answer
18 views

Hearing Loshon Hara from a Gentile

Can a Gentile tell me Loshon Hara about another Jew?
1
vote
0answers
39 views

Are OC 3:2 and 3:13 practiced nowadays? [duplicate]

In OC 3, the Shulchan Aruch discusses many halachos regarding using the bathroom. Many of these seem to be disregarded with the relatively modern invent of the urinal; this is particularly concerning ...
1
vote
0answers
16 views

Genizah and electronic file [duplicate]

Has the subject of genizah been treated about electronic content? For example, if it is permitted to delete (and even cut-and-paste) a computer file containing divrei Torah. Or to delete a .jpg ...
1
vote
0answers
203 views

Modesty for Men - Bodybuilding and Judaism [closed]

I have two practical questions concerning Modesty (Tzniut) for men and what Halacha says about it which concerns bodybuilding: Can a man take half-naked pictures of himself (with only shorts or pans ...
1
vote
0answers
85 views

Entering a Catholic or Protestant church [duplicate]

According to Jewish Law, is one allowed to enter a Catholic or Protestant church?
1
vote
0answers
57 views

Source for 37 Israeli Mitzvot Today

According to the accepted answer of this question, there are 37 mitzvot unique to the land of Israel that one can fulfill nowadays. Notably, however, he includes in that count mitzvot such as those ...
0
votes
1answer
37 views

Speaking Loshon Hara about another Jew to a Gentile

Can I say Loshon Hara about another Jew to a Gentile? For example: If Reuven tells Roy that Yehudah is a stupid person. Is Reuven doing an Aveira?
0
votes
2answers
47 views

What is the Halacha of establishing one's home at the onset of Shabbos?

If one cannot make it home, I heard there's a din that one sets his place where they are now upto 2000 amot. What's the source of this? What if I'm in the back of a car?
0
votes
1answer
240 views

Eating with non jews

Is there any prohibition in jews and non jews sitting at the same table and eating kosher food together at a jewish? wedding? Thank you.
0
votes
1answer
108 views

What does רעך בתורה ובמצוות mean? [duplicate]

The Torah says וְאָהַבְתָּ לְרֵעֲךָ כָּמוֹךָ, Love your fellow as yourself. Actual halacha: Kitzur Shulchan Aruch: It is incumbent upon every Jew to love every fellow Jew as he loves himself. ...
-1
votes
0answers
30 views

When a power-vented hot water heater runs during Yom Tov, it triggers not just a flame, but also a blower fan motor. Is this okay?

You live in a house in North America with a 75-gallon power-vented gas-fired hot water heater. The house has no chimney, which is why the power-vent feature is useful. The instruction manual (PDF) ...