ABSTRACT
The reason that this book exists is because trees are hot in winter infrared photography. Over my Christmas holiday in 1979 I visited a close friend, physicist Walter Carnahan of Indiana State University. I know him to be a specialist in optics and particle physics, which is why I was perplexed when I found him pondering a computer graphic display which merely showed a crazy patchwork of colors. The display seemed to have nothing to do with particle physics, so I figured he had a new software toy or something. But no, this was Science.
