What is Infrared Photography? [Infographic]

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I've received a lot of questions about my infrared photography. Since a proper explanation involves some rather difficult-to-convey concepts, I created an infographic! Hopefully this will also inspire other photographers to give infrared photography a try!

 Like infrared photos? I'm an admin over at r72, the largest and oldest infrared photography group on Deviantart! Also, the day of this post marks the 13th anniversary of the founding of r72, so head over and wish the group a happy 13th!

Some infrared photography from my gallery:
          

Note: I've deliberately left out, or simplified, some scientific principles for the sake of accessibility. For instance, ignoring the effects of diffraction on photon path in the camera illustrations, or the concept of near-infrared vs far-infrared. I've also simplified some of the more complex physics explanations, such as ignoring structural coloration of the eye, and simplifying the Wood Effect (it's a little more than just 'reflection').

A series of photos taken minutes apart comparing visible, infrared, ultraviolet, and full-spectrum:
 

FAQs
Q. Can I turn my photos into infrared in photoshop?
A. Nope! Your camera isn't very sensitive to infrared, and the little bit that does get through the filter gets detected on the same pixels that sense visible light. Therefore there is no way to separate out the signals once a picture has been taken. You have to either put a filter over the lens, or change the filter in your camera.