Aldrich Potgieter currently holds the 54-hole lead at the Mexico Open at VidantaWorld. LA JOLLA, Calif. – Aldrich Potgieter wasn’t sure how to explain it, he’s just always been good.

This study examined the influence of kaolin clay as drilling cuttings on barite-weighted oil-based drilling fluid (OBDF). Different quantities of kaolin clay (0, 5, 10, and 15 wt %) were intentionally ...

A breakthrough discovery has found that Mars may have once been warm, wet, and able to support life. NASA's Perseverance rover has been exploring the Red Planet since 2021, but recently spotted ...

On Monday, Sigma introduced its latest full-frame mirrorless digital camera—the BF—with a radically simple design. Featuring a 24.6 MP full-frame (35mm) sensor, it has just three physical buttons, ...

Following its tiny FP camera from 2019, lens brand Sigma has unveiled the new BF, a mirrorless full-frame affair carved from a single block of aluminum.It's aimed at shooters looking for a simpler ...

Unfortunately, he was unmasked by the CIA turncoat Aldrich Ames three years later. Martynov was executed for treason in 1987. This was somehow spun by online ignoramuses that Coristine was ...

State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China College of Urban and Environmental Sciences, Northwest University, ...

Here’s how it works. If you're looking for a lightweight lens that can do everything from super wide-angle landscapes to telephoto wildlife, then the Sigma 16-300mm f3.5-6.7 Contemporary lens could be ...

I've spent the past couple of days at Sigma headquarters and the Sigma factory in Japan, getting intimately acquainted with the new Sigma BF – perhaps the most beautiful camera I've ever seen, and one ...

Sigma has announced the 300-600mm F4 DG OS Sports lens, designed specifically for applications like sports, action and wildlife photography. Recent Videos Optically, the lens is built around 28 ...

It's a compact mirrorless body with a single rear-plate dial and three buttons that provide haptic feedback when pressed. Sigma says the interface has been designed to be simple and "intuitive." Other ...