The gemoro and shulchan aruch has much to say about 'vestos', way to find out in advance when one will be a niddah, which rarely work today. There are modern methods which do work: does one have to ...
May one prepare coffee ingredients in a brewer such as this one on Friday and set the timer to brew the coffee for 8:00 Shabbos morning?
The Pebble is a smart watch that connects to a smart-phone via Bluetooth and can deliver messages to your wrist. Am I allowed to wear it on Shabbat if I disconnect it from my phone? Think of it, then, ...
Inspired by this question which the author states is not a question of issur/heter. Assuming time travel is possible (to the future or past) is there any reason it should be assur?
A guest brought up this question at the shabbos table, and no one had an answer. In D'Varim 8:9 it says "...a land whose stones are iron...". The question this guest asked was: How is it that the ...
Can self-winding wristwatches be used on Shabbos?