When the green laser encounters atoms along its path through the crystal, it gives the electrons in those atoms a bit of extra energy. In their high-energy state, those electrons can absorb blue light ...

Add Yahoo as a preferred source to see more of our stories on Google. The IDF on Wednesday announced that its Iron Beam laser defense system has shot down dozens of aerial threats during the war May ...

A little more than a month ago, the Psyche spacecraft took off, heading for a namesake "unique metal asteroid orbiting the Sun between Mars and Jupiter." It's not there yet (and it won't be until 2028 ...

Japan has quietly crossed a threshold in naval warfare, moving a 100 kilowatt class laser from the lab into real ocean ...

Israel will fully deploy the Iron Beam on December 30, introducing a laser system designed to intercept drones, rockets, missiles, and mortars at high speed. Defense Ministry research and analysis ...