Energy Thermal Images | Tyrone Turner Photojournalism Multimedia Advertising Washington, DC

Energy Thermal Images | Tyrone Turner Photojournalism Multimedia Advertising Washington, DC

I really recommend having a a look to this wonderful pictures from Tyrone Turner. They have been published in  the National Geographic Magazine. He used an Infrared Camera.
What you see is temperature: Red is hottest and Blue coldest (Nat. Geographic-March 2009).