Alexandrite lasers are a type of solid-state laser that utilize the alexandrite crystal as the gain medium. These lasers are known for their tunability and efficiency, making them suitable for a ...

Determine if you'd like your smart scale to connect to Wi-Fi, Bluetooth or both. User-friendly interface You want a smart scale that has an interface that's easy to read and follow. Especially if ...

The best smart scales help you learn more about your body, from capturing muscle mass to assessing your body fat percentage. Here are our top picks of the best smart scales The best smart scales ...

The Etekcity HR Smart Fitness Scale has a colorful display that can show you a customizable list of measurements and your progress toward your goals during your daily weigh-in. Using the typical ...

The best ametrines show distinct areas of orangy yellow and purple. These colors are featured in this graceful cut design. Photo by Lydia Dyer, © John Dyer & Co ...

Courtesy Jan Goodman Co. Hardness and toughness Gem and mineral hardness is measured on the Mohs scale. The numbers are based on the relative ease or difficulty with which one mineral can be scratched ...

Muscle strength grading is used to categorize muscle strength on a scale of 0 to 5 in relation to the expected strength for a muscle. One of the more common methods is a hands-on test called the ...