Laser hair removal
video:
https://youtu.be/S
20-1_XqVPM
Veritasium:
http://youtube.com
/veritasium
How can light be
used to cool atoms
and molecules ?
(more)
How can light be used to cool atoms and molecules ? Lasers are known to burn things, fix eyes, and dance on powerpoint presentations. But they can also be used to cool objects to some of the coldest temperatures in the universe.