Laser cooling of a semiconductor by 40 kelvin | Nature
Chapter 10 Section 2 Page 348. Temperature & Kinetic Energy The energy of moving objects is Kinetic Energy The temperature of a material is a measure. - ppt download
Atoms at negative absolute temperature: The hottest systems in the world
Negative Absolute Temperatures | Quantum Optics Group
How to create temperatures below absolute zero | New Scientist
Negative temperature? | Chem13 News Magazine | University of Waterloo