Abstract: Optical pickup unit (OPU) is a data read/write head in optical disc drives, and precision orientation angle adjustment of a diffraction grating (GT) is an important process in OPU ...

Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University, Innrain 52a, 6020 Innsbruck, Austria, Department of Chemistry, Bahauddin Zakariya University, 60800 Multan, Pakistan, ...

China has fired a precision laser across 80,778 miles (130,000 km) of space in broad daylight, bounced it off a satellite circling the Moon, and measured the return, marking the world’s first ...

What is lumbar disk disease? The vertebral column, or backbone, is made up of 33 vertebrae that are separated by spongy disks. The spine is divided into 4 areas: Cervical spine. The first 7 vertebrae, ...

Explore the forgotten technology of LaserDisc and its 70s failure. US general details China military plans to defeat US in Taiwan war Joe Don Baker, Actor Known for “GoldenEye” and “Cape ...

You can trust Louder Our experienced team has worked for some of the biggest brands in music. From testing headphones to reviewing albums, our experts aim to create reviews you can trust. Find out ...

Glass skin. We all want it, and yet that dewy, airbrushed glow is elusive for most of us, regardless of age. Sloughing off dead cells at home with masks, scrubs, glycolics, and retinols can help.

“During this test, we were able to demonstrate that we can successfully defeat drone swarms in a tropical environment using layered effects,” U.S. Army Capt. Bray McCollum said. The U.S ...

The cassette Walkman revival is real. From the FiiO CP13 to Gen Z mixtape culture, retro audio is back — hiss, heartbreak, and all. Like a villain from a forgotten ‘80s action flick, the tape Walkman ...

A total of 28 adults were enrolled, with 22 participants completing the 12-month follow-up. Patients received a single injection of 100 mg of VIA Disc NP, a micronized cadaveric disc tissue ...

WASHINGTON — The U.S. Space Force has advanced three companies — CACI, General Atomics and Viasat — to the next phase of a $100 million program aimed at developing laser-based space ...