I'm not master in physics, also you don't, but I know that all bodies over absolute zero emit IR. YOU MUST KNOW THIS SIMPLE MATTER.
Terahertz radiation (or millimetre waves, with a frequency of 1012 Hz) consists of light waves with a wavelength in between microwaves and normal infrared radiation. Terahertz radiation can be used for imaging of concealed objects such as weapons, medical imaging, and the detection of certain chemicals such as explosives and drugs. All objects at room temperature emit a continuous stream of terahertz radiation. We are particularly interested in terahertz pulses with a duration around a picosecond (10-12 s). Such ultrashort pulses are important for fundamental studies of novel materials, the study of biological processes, and particle accelerators. The generation and application of terahertz pulses has been studied intensely for the past 10 years or so with now about 500 publications a year. The Strathclyde group led by Klaas Wynne has been working in this area since 1996.
http://bcp.phys.strath.ac.uk/pr/07pr1.php
http://64.233.169.104/search?q=cache:mCsvDU-9Oo4J:coolcosmos.ipac.caltech.edu/resources/paper_products/print_publication_pdf/eta_car_back_panels.pdf+all+metals+emits+infrared+ university&hl=es&ct=clnk&cd=56&gl=py
And 1,000 like this you can found with some study. You're a sample who must be redirected to the school!!
Insist with your chromium, your ruby laser and maser, you master of the negativity. And what if you show me a classic GENERAL formula, you the master in physics, eh?
What!!!
Show me all the formulas you want, these no quit what I know in use for detect via IR beam!
And also nothing to see GENERAL FORMULAS with DERIVATED APPLICATIONS. IF YOU DON'T KNOW, YOU CAN FOUND USES OF GENERAL PRINCIPLES. If you don't know, the world of the energy is vaste!!! Do you see the difference?
Is very easy AND YOU DON'T KNOW!!!
Hate me!!! Go, you master in nothing!!!
I insist: the only you know about IR is regarding the remote control of your DVD and TV. But you can use for other purposes... if you put SOME EFFORT!!!
Leave Hung in peace, who has more experience, 1,000 times, than you.