The meme reads: “The human eye can only see between 430-770THZ. Our ears can only detect sound between 20Hz-20KHZ. These reach a fraction of the total sound and light frequency range. This means that there is a lot of being able to see or hear.”
It is true that our view of the world is limited, but what is further than what we can see and hear is not a mystery. For the most part it is measurable and very well understood. It is even taught as part of high school science lessons, but from time to time we all need a refresher course.
The claim that the human eye can only see between 430-770THZ is fairly accurate, but what the meme is wrong, claims that this is only a fraction of the light frequency range. In fact this reach of 430-770THZ is The visible light frequency.
However, visible light is only a fraction of the electromagnetic spectrum. Beyond this visible frequency range are invisible things such as infrared, ultraviolet, radio waves, microwaves and even heat. So there is nothing mysterious about the rest of the spectrum that is not visible to us, in fact it is all detectable or measurable in one way or another.
What the meme also does not understand is that even if we could see more of the electromagnetic spectrum with our eyes, this does not mean that we could see more things around us.
For example, you can probably read in a room full of white light. Imagine replacing that light bulb with a red lamp. What you have done here is the visible light range that is available for you, but the reduction of the available light does not change the physical objects around you. You see no less if the visible light range is reduced, you just see it in a different color.
Similarly, if you ever used a night vision camera on a ghost hunt, you know that these cameras use infrared to see in the dark. Infrarood is a great example of a part of the electromagnetic spectrum that we cannot see, but it does not allow the camera to see things that we cannot do ‘. It only shows the same things as we can in different circumstances – total darkness. Turn on your flashlight and you can see exactly the same as the camera.
This is because the physical world around us is not made of light, it only reflects light in our eyes, so we can see what is around us. The reason that visible light is visible is even because the wavelength is such that it can bounce from objects and communicate with our eyes. If the wavelength is too short, as in the case of gamma rays, they go through the space within the atoms of the object instead of being reflected. On the other hand, if the wavelength is too large, your eye should be great to detect them, which applies to radio waves.
In the case of sound, the claim is that we can only hear sounds with a frequency between 20Hz-20 kHz true, and it is correct that the frequency range is further extending but is not audible for the human ear.
Paranormal researchers sometimes forget that when talking about sound “frequency” means “pitch” or “tone”. So a sound at 20Hz is very deep and low, while a 20 kHz sound is an uncomfortable high whining. These low frequency tones are called infrasound and high pitch sounds are called ultrasound.
So there is nothing mysterious on the lurking outside the human audible range, only a number of very low or very high pitches that are not important to us in our daily lives.
