Q. I have a silver comb, brush and mirror set. The tortoiseshell teeth have fallen out of the comb. (I’m not sure if they’re real tortoiseshell or plastic.) Also, the silver needs polishing. Whom can ...

Optical frequency comb sources provide thousands of precise and accurate optical lines in a single device enabling the broadband and high-speed detection required in many applications. A main ...

If you’re looking for a simple tool to help keep your beard groomed, you have two main options: a beard brush, or a beard comb. According to the experts we talked to, combs are better for longer ...