Ever since World War II, the US Navy has been developing special technologies that could give Marines the ability to see in the dark. For three months, the volunteers were fed nutritional supplements from the liver of pike perch, after which, according to some reports, they gained the ability to distinguish the infrared parts of the spectrum. The planned goal of the US Navy was to help Marines distinguish between infrared signal lights.
The ability to see in infrared helps some animals survive in the struggle for survival in natural conditions, for example, snakes, thanks to this ability, see the heat signature of their prey. To distinguish this part of the spectrum, people need a night vision device. Modern scientists have decided to recreate the experiment of the military.
Recent experiments were carried out by a group of American researchers who showed that limiting the amount of vitamin A1 and increasing A2 in the diet increases the secretion of a substance called porphyropsin. It is a visual pigment with maximum spectral sensitivity and a wavelength of 552 nm. Thanks to this rod-sight pigment, freshwater fish can see in the infrared. It turned out that this unique ability can also be endowed with a person.
The sources of vitamin A1 are usually green and yellow-pigmented vegetables (also carrots and peppers), and the source of A2 – fish liver. Four volunteers were chosen for the experiment, who were fed an increased dose of vitamin A2 for several weeks. The results showed that they could distinguish between 980nm flashes. outbreaks. The infrared range is between 800 and 2500 nm. in the electromagnetic spectrum, which means that the volunteers could distinguish some heat signatures. However, some skeptical researchers do not believe the results of this study and argue that no matter how much vitamin A2 we eat, our eyes will never perceive the infrared spectrum, since the molecular structure of photopigments in photoreceptors is limited.
Source estet-portal.com
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