Laser offset-frequency locking is used to generate a probe for delay variation detection in optical links. The probe frequency jitter is less than 2 Hz, and the link delay jitter is 15.5 fs.

The report, released on Wednesday, indicates that the pilot’s seat unexpectedly slid backward during takeoff on June 12, causing the captain to unintentionally pull the throttle levers to idle.

An Iranian TV station backed by the Islamic Revolutionary Guard Corps aired a twisted, Lego-style propaganda video glorifying its war with Israel — and claiming victory in the conflict.

Both President Trump and Senate Republican leaders are pressing for the House to accept their version of the sprawling domestic policy bill, but some right-wing holdouts are opposed to key pieces.

Japan reappointed top foreign exchange diplomat Atsushi Mimura for a second year, the finance ministry said on Tuesday, cementing his role in the country's current U.S. tariff negotiations.

President Donald Trump said the f-word when talking about Israel and Iran accusing each other of violating the ceasefire of their "12-day war." ...