Around the start of a new year, a sudden twinge of urgency boils in the pit of our stomachs for something new and fresh. Luckily, there's a quick (and affordable!) way to scratch that itch: getting a ...

IF a pair of optically flat plates, making a wedge angle of a few seconds, be placed in the beam from a collimator with a cross slit (to obtain effectively a point source) and the eye be placed at the ...

Tempted to try a fringe, just like Sabrina Carpenter? You're not the only one. But with so many options—curtain, box, or even micro—choosing the right style can feel overwhelming. To help you navigate ...