While photographing the auroras during a geomagnetic storm, Mike Lewinski caught sight of something extraordinary: a brilliant white beam of light tearing through the night sky. He was shooting ...

White light interferometry (WLI) is a contact-free optical method for measuring surface height. It uses the phase difference between the light reflected off a reference mirror and the target sample… ...

WHITEHALL, Mich. — When summer arrives, West Michigan’s beaches come to mind, often accompanied by visions of picturesque lighthouses. One such spot is the historic White River Light Station ...

WHITEHALL, MI – This beautiful brick lighthouse is about to open for its sesquicentennial season, including tower climbs and an onsite museum. Built in 1875, the White River Light Station is 150 ...