(Boneh-בונה Ep. 58) (#778) To clog a small crack in a pipe. Turning off gas range. Putting on, taking off smoke detector. Unscrewing the bulb that's off.

Is There a Difference Between a Dirt Ground or a Hard Surface When It Comes to Playing with Balls, Marbles, etc.?;

Understanding the Concept of פסיק רישיה (P'sik Reisha): When an Allowed Action Causes a Forbidden Result with Two דרבנן. When Is One Allowed to...

(Squeezing materials.) practical applications in conjunction with using a sponge with a handle or without a handle;