Using an Hourglass on Shabbat

by R. Daniel Mann Question: This past Yom Kippur, I was a few days after birth, and so a rabbi said that I could eat small amounts of food. He lent me an hourglass set to give the correct amount of time for “eating in intervals.” Is it always permitted to use an hourglass on Shabbat, or was it a ...

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Halachic Ramifications of Ad-blocks

by R. Daniel Mann Question: I went on a religious website, and it detected that I have an ad-block program. They gave me a choice to disable my ad-block or continue while violating geneiva because ad-blocking takes away their parnasa. Would it be forbidden to continue with ad-blocking? Answer:  (We are not addressing the desirability of avoiding ads, some of ...

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LED Shoes for Children on Shabbat

by R. Daniel Mann Question: Can a child wear on Shabbat shoes that have lights (LED) in the soles that light up when he walks?   Answer:  The consensus is that activating light-emitting diodes (LEDs) on Shabbat is not a Torah-level prohibition, but is a Rabbinic level one. One connects a circuit and light is emitted (by the transfer of ...

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The Unibrow in Jewish Law

by R. Daniel Mann Question: I am a young man with a unibrow, which I find very embarrassing. May I remove some hair with tweezers from that area? Also, may I remove some more hair to make my eyebrows less bushy? Answer: The gemara (Nazir 58b-59a) forbids a man to shave his pubic and underarm hair with a razor. There ...

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Tricking a Cheater

by R. Daniel Mann Question: If someone asks me for an answer during a test, can I tell him the wrong answer? (Response to follow-up question – I prefer not to refuse either to not suffer socially or so the cheater gets what he deserves.) Answer: Cheating on a test is an example of geneivat da’at (deception) (Igrot Moshe, Choshen ...

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