By the Eyes of the Blind: Difference between revisions

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* Certain bitter chemicals, such as phenylthiocarbamide (PTC) can only be tasted by people with the right flavor-receptors in their taste buds. People with the greatest variety of receptors and/or a denser supply of them are known as "supertasters", and tend to dislike flavors with bitter components, such as coffee or cabbage.
* Colorblind people can be useful in aerial recon. Some types of camouflage don't work on them.
* A lot of non-military camouflage looks a uniform pale grey in near-infrared. This is mostly a result of modern dyes being tuned for the visible spectrum, but has the side-effect that, for example, a game hunter's camo suit stands out as a solid block when viewed through a cheap near-IR camera. This side-effect is sometimes viewed as a safety feature: an injured person wearing camouflage is easy to spot if the rescue party uses an infrared camera (and near-IR cameras are a LOT''lot'' cheaper than the far-infrared "thermal imaging" kind).
** Some popular [[Virtual Reality]] headsets use near-infrared cameras to locate themselves in space, and for "passthrough" (where the wearer sees through the cameras). Add an infrared torch, and the wearer can see where (s)he's going in what, for everyone else, is complete darkness.