Abstract: We have obtained optical phase coherence between a 1550-nm mode-locked diode laser and a 800-nm femtosecond frequency comb used in an optical atomic clock.

(CNN) — Ten inmates escaped from a New Orleans jail after breaching a wall behind a toilet and possibly having help, the local sheriff said Friday. So far only three of the men have been found.

But Wall Street has a new question for President Donald Trump: What about tax cuts? Lawmakers this week are debating Trump’s tax agenda, which includes extending the 2017 Tax Cuts and Jobs Act ...

Fallout shelter, as in nuclear fallout following an atomic bomb blast ... “It had trundle beds on the wall. It had five gallon glass containers of water. There was a crank to crank air in ...

This issue of the Bulletin of the Atomic Scientists is devoted to lessons learned from the recent COVID pandemic—and how to stop or constrain the next pandemic, by buttressing public support for ...

Step-by-step tutorial on crafting a beautiful and functional wooden wall clock — perfect for beginners and woodworking enthusiasts. Newark Mayor Baraka Arrested Outside ICE Detention Center ...

Atomic Time Synch is a Python application that allows you to synchronize your system time with an atomic time source using the Network Time Protocol (NTP). It provides both manual and automatic time ...

An ESP8266 Module and an Arduino sketch replace the WWVB radio receiver in an Atomic Clock to synchronize the clock using NTP.

The result is a clock with a total a total systematic uncertainty of 2.2×10⁻¹⁶ — a precision that means it loses less than a second every 140 million years. This extremely subtle lag is ...