10
votes
2answers
209 views

Which types of light bulbs are 'only' an issur d'rabbanan to activate on Shabbat

I'd be very interested to know if anyone has definitive advice on which types of light bulbs are considered an issur d'rabbanan (Rabbinic prohibition) vs an issur d'oraita (Torah prohibition) to turn ...
10
votes
3answers
380 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
1answer
253 views

Shaking a no-battery flashlight on Shabbos

What is the problem with shaking one of the no battery/shaking flashlights which is on on shabbos?