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Questions tagged [technology]

Questions about how Judaism interacts with technological innovations.

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26 views

Can you double wrap chametz food in the oven before Pesach? [duplicate]

I am going largely by hearsay on this... Two reliable rabbis have told me that if you want to heat kosher food in a non-kosher oven, you can double wrap the food in foil and heat it in the oven, and ...
5
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0answers
393 views

Looking for online German (Yekke) Torah Trope practice

As a lad, I often attended a German (Yekke) shul in my neighborhood, where they used the Yekke Torah trope. My main shul sometimes used this trope during Yom Tov readings. (I.e. - the Yekke trope is ...
6
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3answers
343 views

T'chum shabas maps?

There are many better or worse maintained maps of eruvei chatzeros available to the public, which are a boon to travellers to a new place interested in where they can move things outdoors during ...
3
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3answers
587 views

Mitzva to hear Megillah Esther

My question has two parts: (1) I believe it is a mitzvah to hear the entirety of Megillat Esther twice on Purim, both at maariv and also at some point during the daytime. Is that correct? (2) would ...
4
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0answers
59 views

Has there ever been an expert system (i.e. computer program) developed for answering simple halachic queries?

As a computer programmer and student of the Torah, I've conceptualized the idea of codifying halacha - quite literally - in an expert system, allowing one to submit halachic queries and receive ...
9
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1answer
453 views

Can meat grown from living cells be kosher? Is it eiver min hachai?

Earlier questions such as In vitro meat — further questions dealt with meat grown from stem cells of slaughtered animals. This question is specifically about meat grown from stem cells taken from live ...
-1
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2answers
153 views

Chassidic aversion to dual-sided implement-wearing

Disclaimer: This may sound like purim-torah-in-jest, but since Mi Yodeya has pasken'ed that only Adar Sheni is elegible for such, I (despite my personal minhag) post this question in all seriousness. ...
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1answer
100 views

Can a public road include an underground area below it to qualify as a Reshut Harabim?

On Shabbat, one may not carry in a Reshut Harabim. Kitzur Shulchan Aruch 81:2 says that there is an opinion that a road not having at least 600,000 people passing by it daily would not be considered ...
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0answers
25 views

Peru Urevu Halacha question [duplicate]

If a jewish male donates sperm to a jewish couple who cannot have children for whatever purpose. By donating sperm does the donor fulfill the mitzvah of Peru Eruvu? If the answer is yes, then the ...
4
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2answers
140 views

Scheduling Email for 3AM and Gneivas Daas

Is is permitted to schedule an email for the wee hours of the night, like 3AM, to give the impression that you were working late? Is it significantly well known that there are services like ...
1
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1answer
143 views

Is there an online source for trope occurrences?

As a Torah reader, I like to find nuances and inherent meanings in trope (cantillation) nuances and "unusual" occurrences in the Torah. For example I'm looking for all the places that have two ...
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0answers
21 views

Has cryonics been treated in Rabbinic literature? [duplicate]

Has it been treated by rabbinic literature? If yes, what does it say about cryonics?
4
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2answers
226 views

Can one wear Yaktrax on Shabbat?

Yaktrax is an ice traction "device" that you slip onto the bottom of your shoe. Can one wear this on Shabbat? Possible concerns: boneh - "building". Wearing the device involves stretching a band onto ...
4
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2answers
217 views

Can one kasher anodized metal?

Anodized metal is metal with an increase in the thickness of the natural oxide layer on the surface of metal parts. Is there any issue kashering it, or is it basically like metal with a layer of rust ...
13
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2answers
2k views

Pirating software that has already been bought

Say, for instance, that I've previously bought a set of DVDs (for example, the workout program P90x, which contains several DVDs in a set), and that I am currently in a different country and have not ...
4
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0answers
252 views

The Mekor Baruch's intructions of making gold from copper

Rav Epstein in his Mekor Baruch 3:19:6 brings a story about him and a maggid. The maggid was looking for a certain sefer which instructs one how to make gold from copper. The Mekor Baruch (who had the ...
21
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2answers
435 views

Can an ultrasound be relied upon?

I have read reports of the accuracy of gender prediction from an ultrasound with numbers ranging from 90-98%. There is a halacha (Y.D. 194:11) that if a fetus sticks its hand [or possibly any limb] ...
16
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2answers
339 views

Netilas Yadayim with automatic sinks

It seems there is precedent to allow for netilas yadayim when you don't have a cup, by turning the sink on and off for each rivi'is per hand. By employing this method you satisfy the requirement of ...
7
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4answers
375 views

Comprehensive map/list of active Orthodox synagogues in the U.S

Does anyone know of a map or list of all the active Orthodox shuls in the U.S.? When I was looking for which residencies to apply to it was my limiting factor and sometimes it was hard to find out ...
2
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0answers
219 views

Looking for information about going to Mikvah with an IUD [closed]

I am interested in going to a Mikvah for the first time. I have an intrauterine device (aka IUD, a form of birth control) and get very little or sometimes no bleeding. I don't now how to determine ...
7
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1answer
433 views

Studying Torah while lying on a bed?

I often watch Shiurim and use Mi Yodeya while lying (sometimes sitting) on my bed. What are the parameters for one's position while studying Torah? Am I doing something wrong?
3
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1answer
89 views

Hydroponics – Allowed on Seventh Year?

Would hydroponics be allowed in Israel on the seventh year, when there are additional restrictions on farming the land?
15
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1answer
436 views

Are there any contemporary “Gedolim” that prohibit the use of davening from a smart phone?

It took me a long time to upgrade my technology, but I admit that lately, I have been using my smart phone during davening. My rav doesn't object, but some of my friends told me that it's prohibited ...
5
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0answers
251 views

Is it better not to wear a watch on Shabbat?

I know it is permissible to wear a watch on Shabbat, and I have already perused this question about the particulars of what kinds of watch features are and are not permitted (ignoring the issue of ...
5
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1answer
207 views

Does this count as Tzedakah?

I found out there's an app that gives money to charity depending on how much you run. You can choose between dozens of organizations that help stop hunger, help the homeless, cure cancer, provide ...
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0answers
400 views

Nest Thermostat and shabbat [duplicate]

I'd like to know if a Nest Thermostat would be allowed by halacha? They say it programs itself and it realizes when you come home, so when you come home on shabbat, the machine will detect it, and it ...
6
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1answer
719 views

Television on Shabbos

Let's take as a given that it is forbidden to turn a television on or off or otherwise use electricity on Shabbat. Let's also ignore the whole issue of watching TV in the first place. We can also ...
2
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1answer
191 views

Is there a prayer I should say before taking off in a plane?

On Monday, I am going to take a flight. I would imagine I should say the Shehecheyanu when I land, thanking God for my continued existence, but is there a blessing I could or should say when I take ...
2
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1answer
247 views

Is there an Android Tikkun App that has sound?

During the "pre smart phone days" (Yes, that DID exist), I used Trope trainer to practice some of my laining and to train my kids and some Bar Mitzvah boys. I recently downloaded the "Tikkun Korim" ...
6
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1answer
760 views

Is it forbidden to use a sand timer on shabbos?

Everyone I know seems to say that using a sand timer (hourglass) on shabbos is forbidden. The question is why? Is it because of sifting? Is there some other melacha involved? Is it actually forbidden?
2
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0answers
64 views

Equal volume when doing birkat kohanim with a microphone

I attended a musical davening this week, and to accommodate the large crowd, the chazzan wore a microphone. The kohanim however did not. The result of this was that the chazzan's voice ended up much ...
8
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1answer
451 views

Is shaving with this kosher?

Is shaving with this laser shaver kosher? I don't keep a beard and not looking forward to keeping one at all but I don't use razors etc, only electric shaver etc. This "razor" uses a laser for "...
3
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0answers
96 views

What halachic principles are involved in starting the iRobot on Shabbos with a timer? [closed]

What halachic principles are involved in starting the iRobot on Shabbos with a timer? Can it be turned on anytime or just at night? Is it like security cameras in that it is OK to walk by them if ...
3
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2answers
279 views

Determining the status of bedika cloths via digital media

Determining the colours on a bedika cloth is a wisdom that has been passed on from generation to generation. Preferably a bedika cloth is checked by the light of the sun ('white light'). I've have ...
4
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2answers
473 views

Is an on-call doctor allowed to read non-emergency text messages on Shabbat?

My shul has a few doctors who carry their cell phones with them. When their phones buzz (B"H, they are smart enough to put the phones on vibrate mode while davening.) with a text message, they, of ...
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0answers
69 views

Large scale hydroponics and Shmita

The gemara in Nedarim 59 (among many other places) discusses the concept of shmita produce and plants grown from them retaining their status when the original "seed" isn't destroyed when planted. In ...
1
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2answers
176 views

Depilatories- creams or “shaving powders” on Shabbos

Is it permissible to use Depilatories (creams or "shaving powders" which chemically dissolve hair) on Shabbos? and if not- why?
0
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1answer
172 views

I am looking for the Torat Emet program to list verses for names

I am looking for a direct link to the Torat Emet program that helps you find verses for your hebrew name. I am looking for more verses for my name to use during the shmona esrei. I saw a mention of ...
4
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1answer
492 views

Using the Coravin Wine Preserver on shabbat

There is a new device called the coravin which allows one to insert a needle into a cork of a wine bottle and the wine flows through the needle by using argon gas (protects quality of wine) and by ...
0
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0answers
52 views

Is one allowed to use a nasal filter or gas mask on Shabbat or Yom Tov?

These are products that are used to protect from chemicals/pollen/dust allergy or pet hair. A water filter I see would be mussar if the water is basically clean as was already asked here: Using water ...
1
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0answers
95 views

Can one carry a GPS operated timed device across a time zone on Shabbat?

I read somewhere, that if you set a timer before Shabbat, you are not allowed to adjust the timer or clock on Shabbat to reset the time that something goes on. So, let's say that you live in ...
3
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2answers
812 views

Surrogate mother

If a fetus has been formed in a mother and then deposited in a surrogate mother, who is considered the mother? In other words, does the mother's 'seed' make her the mother? The story of Yosef and ...
2
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1answer
103 views

When 2 witnesses are required to verify something, can one or both of them witness this using Skype?

Examples of when you need 2 witnesses testifying an event: groom's "purchase" / acceptance of the terms of the ketuvah witnessing kiddushin (groom giving bride a ring) If two witnesses watch this ...
1
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1answer
174 views

T-Fal Thermo Spot Heat Indicator Cookware on Yom Tov & Shabbos

T-Fal has a cookware set known as "T-Fal Thermo Spot Heat Indicator Cookware". These pots have a special technology which indicates when the pan is ready for use. May one use such a pot on Yom Tov to ...
6
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1answer
233 views

Automated Cooking Machine Programmed

I realize in most situations to have a factory line be "cooked by a Jew" an observant Jew would have to turn the oven on, stove on, or something along those lines. This morning I saw this article ...
4
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1answer
203 views

Can a smartphone count as a sefer for stacking purposes?

Considering that, these days, you can have quite a bit of Torah on cellphones (indeed, on my iPhone I have all of Tanach, Siddur, Halachic works, Jastrow dictionary, etc.), is it possible to make an ...
2
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1answer
446 views

Solar Power on Shabbos

What's the deal with using solar power on Shabbos? Cooking is permitted, but what of the following cases: 1) Heating water (Dud-Shemesh style) 2) Solar-powered watches 3) Solar-powered toys What ...
4
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1answer
2k views

What technology did King Solomon have?

I'm looking for sourced statements of modern technology possessed by King Solomon. So far I have seen: An answer here quotes the idea that King Solomon had a flying carpet of sorts. The Ben ...
7
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1answer
182 views

Computer hacking in halacha

This question regarding legal complexity versus simplicity in modern law got me talking about the relatively simple structure of Jewish tort law. It also had me wondering: What sort of categorization ...
0
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1answer
56 views

Would hydroponically grown beans be considered kitniyot?

As I understand it, beans were included as kitniyot because they grew in the ground next to wheat. However, if you grew the beans hydroponically, would they still be classified as kitniyot?