Abstract: To address the problems of fringe compression in optical mirror measurement, this article shows a method for phase measuring deflectometry (PMD) of spiral fringes in polar coordinates. This ...

Bitcoin (BTC), the world’s oldest and most valued crypto, dipped below the $114,000 mark early Tuesday. Other popular altcoins — including the likes of Ethereum (ETH), Solana (SOL), Ripple (XRP), and ...

An optical illusion is a visual phenomenon where our perception of thinking about an image differs from objective reality. This image is seen as a Black-and-White Checkered Spiral Pattern Optical ...

A Brisbane doctor spent years mentoring young Indigenous leaders and medical professionals before she and her eight-year-old daughter were found dead in a suspected murder-suicide. But by the age of ...

The Baltimore Ravens were again without quarterback Lamar Jackson for Thursday's practice, a sign that the two-time NFL MVP could be out for a second straight game. As the Ravens saw cornerback Marlon ...

HUNTINGTON BEACH, Calif. (AP) — A helicopter that was coasting above a popular Southern California beach Saturday suddenly lost control and began spiraling in midair, eventually losing altitude and ...

The Toronto Blue Jays brutally rubbed salt in the wound as they celebrated their series victory and ended the New York Yankees' season in misery yet again on Wednesday night. Despite saving face and ...

British rocker Yungblud — who has been praised by the likes of Lenny Kravitz, Steven Tyler and the late Ozzy Osbourne — released his fourth studio album, "Idols," in June. The album is his third in a ...

SAN FRANCISCO—Artificial intelligence is powering a comeback across much of this hard-hit city. That recovery isn’t doing much to stop its biggest mall from imploding. San Francisco Centre resembles a ...

Bill Belichick's college football experience has been nothing short of a disaster and new bombshell reports suggest that won't be changing any time soon. The legendary Patriots coach has suffered a ...

The Cincinnati Bengals are sinking, and recently acquired quarterback Joe Flacco is unlikely to save them. On Tuesday, the Bengals made a questionable panic move after losing their third consecutive ...