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I found this article that answers my question: R’ Moshe Feinstein (Igros Moshe OC 4:60) writes that one may only use timers on Shabbos for one’s lights. Firstly, timers are akin to instructing a non-Jew to perform a melacha on one’s behalf which is prohibited. Additionally, it isn’t respectful for Shabbos. As people always had non-Jews come in to their ...


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This Star-K article by Rabbi Tzvi Rosen says: Although induction cooking offers a koshering benefit, the cooktop cannot be used on Shabbos or Yom Yov because the cooking connection is made once the pot is put onto the coil area. Similarly, one would not be able to remove the pot from the cooktop on Shabbos or Yom Tov because one would be “disconnecting” ...


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Journal of Halacha & Contemporary Society, No. XXI - Spring 91 - Pesach 5751 has an article by Rabbi Michael Broyde - Adjunct Assistant Professor of Law at Brooklyn Law School, and Rabbi Howard Jachter - Associate Rabbi of Congregation Beth Judah in Brooklyn which gives Rabbi Auerbach's opinion in his own words. The article concludes that current ...


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Rav Belsky, shlit"a, explicitly declares his reasoning in the letter: ...a tiny possibility of ספק is introduced so that the odds of the melocho being completed is reduced somewhat or delayed minimally. This concept has no place in Halacha. My understanding is that his reasoning is not that different from the general principle that we are not concerned ...


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The Avnei Yashfei 30:5 writes that using a faucet does not count as using a kli since it is connected(to pipes) to the the house and has a din of being attached and cannot be considered a kli(utensil). So even turning the faucet on and off with your hands wouldn't help. Rav Eliyashiv holds this way as well and is also quoted in Ashrei Ha'Ish(Chelek 1:pg.203 ...


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Regarding human/animal power Similar to @Loewian by a regular valve the human is actually relieving the pressure that is in the pipe (so the first water that comes out is regarded as human propelled ( source)) But by an electrical valve the human is not reliving the pressure physically but it is only being caused by him (There might be an opinion that if ...


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A competent rabbi should be consulted in all such cases. A similar case is discussed here where the questioner wants to know what to do if he's in a hotel where the rooms are accessed by a magnetic card. The rabbi answers that he should ask the hotel staff for a conventional key. If that fails, he can ask a non-Jew to open the door for him (since one is ...


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He also signed on this letter, which allows for grama devices in hospitals.


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The prohibition of erasing divine names is derived from the juxtaposition of "...we'avadtem eth shemam..." ("and destroy their names...") and "Lo ta'asun kein la'hashem..." ("Do not do likewise to the L-rd..."). In general, it’s forbidden to erase even one letter of any of the 7 divine names : שם הויה, אדנות, א-ל, א-לוה, אל-הים, ש-די, צב-אות (the ...



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