Science news

Superfast camera captures cone-shaped wakes of light

Pulses of light can leave behind cone-shaped wakes of light, somewhat similar tocone-shaped sonic booms created byaircraft flying at supersonic speeds. Now, a superfast camera has captured the first-ever video of these events. To capture video of these elusive light-scattering events, the researchers developed a “streak camera” that could capture images at speeds of 100 →

Leap second problem

At the ends of the 2016 the new year’s eve was one second longer than usual because there was a leap second. Why this was done? Time is a little bit complex thing. There are leap years and leap seconds. A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time →