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