Most of the world we live in is invisible to the human senses. As humans, we’re only able to detect a very narrow slice of reality and there’s so much beyond what we can see and hear. Visible light, the range of wavelengths we can see, spans between 430 THz and 790 THz. However, there’s an entire electromagnetic spectrum beyond that, including radio waves, microwaves, and X-rays, that our eyes simply can’t perceive. We’re surrounded by signals, energies, and phenomena that are hidden from our sight. Our hearing range is just as limited. Humans can hear sounds from 20 Hz to 20 kHz, but sounds outside this range, such as ultrasonic that is higher than 20 kHz and infrasonic that is below 20 Hz, exist all around us, though we can't hear them. Animals like dogs and dolphins can hear frequencies far beyond our range, while some creatures can sense electrical fields or vibrations we’ll never feel. The fact is, there’s a whole world beyond our natural sensesa hidden universe of phenomena that science continues to explore. So, next time you think you’ve seen it all, remember: the universe is much more than what meets the eye. |
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