What is femtosecond...It is one millionth of a billionth of a second or also called as quadrillionth which is 1/1000,000,000,000,000 of a second...The Japanese scientists have created lasted induced plasma display which is safe to touch by reducing the length of the laser bursts from nanoseconds to femtoseconds
Watch this excellent video:
https://www.youtube.com/watch?feature=player_embedded&v=AoWi10YVmfE
http://singularityhub.com/2015/06/26/this-touchable-midair-3d-laser-display-is-pretty-magical/
Watch this excellent video:
https://www.youtube.com/watch?feature=player_embedded&v=AoWi10YVmfE
http://singularityhub.com/2015/06/26/this-touchable-midair-3d-laser-display-is-pretty-magical/