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The human eye is a very sensitive tool, like many other things, such as our ears. We can perceive certain wavelengths, and end up not including the whole spectrum. Why you might ask? Possibly because we do not need them, or maybe we haven’t fully evolved. Like these tools we use to live, they are but a tiny portion of the natural world. What we can’t see, is known as what’s invisible. There are three factors which we can categorize as invisible. The wavelength, the speed, and the size. All 3 separately effect what we can see, and what we can’t.
Approximate Word count = 371 Approximate Pages = 1.5 (250 words per page double spaced)
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