Scientists say they've developed a high-resolution laser device that can read the text in a conventional book from a whopping 0.85 miles away. As detailed in a new paper published in the journal Physical Review Letters, the team used interferometry, a commonly used technique in the world of astronomy that uses superimposed waves of light to create interference patterns, to develop their system. However, instead of combining waves of radiation, light, or sound, the team used the information collected by multiple light detectors to measure variations in intensity, a technique known as intensity interferometry. They then used this data to […]