The ceiling fan light in the mah jong/ bridge/ jigsaw puzzle room suddenly began flashing like a strobe light when it was turned on. This is disconcerting during puzzling, distracting during mah jong ...

A few months ago my roommate came home with a cantaloupe-size disco ball, placed it on a shelf near the window, and waited for the sun to shed flecks of confetti light around the living room. Once I ...

Light bouncing off one disco ball looks cool...if you’re at a middle school dance. Light bouncing off 50 disco balls? That’s a work of art. Or at least it is when you use multiple projectors and 3-D ...