Looks like biology has restricted a whole lot of our vision!

Dr. Karan Raj, who has millions of followers on the social platform TikTok, explained in one of his videos why humans are capable of seeing only 0.0035% of reality. It means we can see a very tiny portion of the vast electromagnetic (EM) spectrum. What we see is nothing but a range of wavelengths visible only to human eyes.


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We may have already learned about it in biology class; still, when we imagine how much reality is different from human perception, it's mindblowing! Dr. Raj's video sparked a lot of exciting conversations from supernaturals to even aliens and other dimensions. According to Raj, "the supernatural is just science we haven't explained yet! Same with magic!"

The colors we see are light reflected by objects in different wavelengths. The color sensing cells in our retina, known as cones, detect the wavelengths and signals the brain to recognize the color. However, according to the study, there are few "forbidden colors" that the human eye cannot see. Reddish green, a hue of yellowish blue are such colors. This color composition neutralizes the frequencies in human eyes, making it almost impossible for us to see.

When human eyes see the light, the retina cells, known as "opponent neurons" are stimulated. When we see the red color, the opponent neutrons fire stimuli telling our brain the color is red. These same neutrons are obstructed by green light, and the lack of activities indicates the brain that the color is green.

Similarly, yellow light excites another set of opponent neurons in our brain, while blue light hinders them. Almost every color we can see produces mixed stimuli in the opponent neurons. Our brains can decode the stimuli to perceive the colors distinctly. Only red light inhibits the green light, and yellow light blocks blue, making it almost impossible to visualize these colors coming from the same source.

Impossible colors

Impossible colors, photo from Pixabay 

Nowadays, scientists believe eye exercises and luminance can trick our brains into seeing the forbidden colors. Several tests are available which can possibly make us see unfamiliar colors.

A typical human eye can respond to wavelengths of only about 380 to about 750 nanometers. A broad portion of the electromagnetic spectrum is not visible to us, including infrared, ultraviolet, X-ray, gamma-ray. It seems evolution has kept us away from the real world!

Still, human eyes can see infinite objects in this universe. On a clear night, we can even see the Andromeda galaxy with the naked eye, which is 2.5 million light-years away, (almost 15 quintillion miles)! The tiny cells in our eyes do make up a lot for missing 99% of the world.

Is your mind blown or is this too much science to process? Anyone who's color blind want to weigh in on this? Share in the comments.