Q: My 2-year-old HP running Windows 11 began locking up intermittently. I had it in a shop twice, and it worked perfectly at the shop. At home, it began locking up after working for several hours. The ...

For the first time ever, scientists have used a technique called "quantum squeezing" to improve the gas sensing performance of devices known as optical frequency comb lasers. These ultra-precise ...

Scientists use devices known as frequency comb lasers to search for methane in the air above oil and gas operations and to screen for signs of infection in human breath. A new study could help make ...