I have enclosed photographs of a clock handed down to me by my great-uncle. He purchased it at an estate sale around 1931 and I received it around 1972. The clock ticks, chimes, and keeps time - ...

At the 2005 Roadshow in Providence, Rhode Island, I met a guest named Coulter who had traveled from southwest Connecticut to have his clock evaluated. In the course of our conversation Coulter ...

A native of Southeast Louisiana, Kade Seversen is a self-described "serial entrepreneur" with ambitious plans.

We love projects that make you do a double-take when you first see them. It’s always fun to think you see one thing, but then slowly realize everything is not quite what you expected. And this ...

Atomic clocks record time using microwaves at a frequency matched to electron transitions in certain atoms. They are the basis upon which a second is defined. But there is a new kid on the block, the ...