Hmm interesting I thought I'd check to see what heat the laser gave off at work we have a very sensitive thermometer the laser did increase the temps a touch but it was super low 0.05 of a degree C (0.09F) so tracking heat possibly but unlikely.

fishboyUK I don't know how deep balls see into the red IR end of the scale but they do see/sense heat. Snakes have the ability to 'see' heat, they use that to hunt. Mine totally ignores a rat that is not warm enough. Pit vipers are even better than pythons at detecting temperatures. I am not sure see is the right term but as we can't there are no good descriptive words to use.

The whole thing is quite interesting.
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