It heats the air it zips through to five times the surface temperature of the sun. Still, around 90 percent of lightning-strike victims survive. Over the past three decades, lightning has killed an average of 51 people per year in the U.S. but left more than 500 injured and alive.
Computer vision syndrome. Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time.
CVS also is an abbreviation for Computer Vision Syndrome . Concurrent Versions System (CVS) is a program that lets a code developer save and retrieve different development versions of source code . It also lets a team of developers share control of different versions of files in a common repository of files. This kind of program is sometimes known as a version control system .