May one whistle on Shabbat? May one place a music player on a timer to play music on Shabbat? Click Here To Learn More!

May one move a fan on Shabbat? May one move an alarm clock on Shabbat? Click Here To Learn More!

May one perform a melachah on erev Shabbat that will continue on Shabbat? For example, may one put something on a timer to activate on Shab