Earlier this year the U.S. Army shot down a number of hostile drones in the Middle East using a weapon long dismissed as more science fiction than reality—the laser. After decades of costly ...

Laser levels offer precision, reliability, and a measure of safety. Unlike traditional bubble levels, laser levels project a beam of light that serves as a reference point for various construction ...

When we first heard of [Ildar Rakhmatulin’s] plan to use OpenCV on a Raspberry Pi to detect mosquitos and then zap them with a 1 watt laser, we thought it was sort of humorous. However ...

The best color laser printers are a great investment that can save you time and money compared to cartridge-based inkjet printers. Laser printers use toner, which lasts a long time, delivering a ...

NASA’s Psyche spacecraft is depicted receiving a laser signal from the Deep Space Optical Communications uplink ground station at JPL’s Table Mountain Facility in this artist’s concept.

Lasers are a common tool in dentistry. They can be used for teeth whitening, tooth decay, gum disease, and mouth lesions. Using lasers in dentistry for tooth tissue procedures and other dental ...

Laser pointers (sometimes known as laser pens) are compact, handheld laser devices. They are typically used to highlight an object or point of interest by illuminating it with a bright spot of colored ...

who joined Alger in 1999 and runs Alger Capital Appreciation and Alger Spectra. Alger has stuck with its growth-oriented philosophy and has taken steps to strengthen its product lineup.

This causes an absorption spectra, as shown below. Because the energy levels are the same, the lines in the emission spectra of an element are in the same position as the lines in the absorption ...

One solution could come from a technology called “free-space optics” (FSO), which uses lasers to transfer data through the air. It was pioneered in the 1960s by NASA and for decades has been a ...

Studying the line spectra produced by hot gases and absorbed by cooler gases allows us to identify the elements in stars. When a gas is very hot, it doesn’t emit all wavelengths of light.