There are many applications used in the home and in leisure activities,  in support and rescue services, by the communication industry, scientific research, and by the military. Wikipedia provides an excellent starting point for research projects. This is especially true for science.

Night Vision

http://en.wikipedia.org/wiki/Night_vision

Thermography

http://en.wikipedia.org/wiki/Thermography

Infrared Homing

http://en.wikipedia.org/wiki/Infrared_homing

Infrared Photography

http://en.wikipedia.org/wiki/Infrared_photography

Infrared Spectroscopy

http://en.wikipedia.org/wiki/Infrared_spectroscopy

Infrared Astronomy

http://en.wikipedia.org/wiki/Infrared_astronomy

Looking for Public Domain Images?

Try searching o­n   http://commons.wikimedia.org/wiki/Main_Page

There are hundreds of images related to Infrared here……http://commons.wikimedia.org/wiki/Main_Page