"...what we see with our human eyes is just a tiny part of the electromagnetic radiation that's given off by the sun.
And depending on what happened to the light before it got to you, some of those visible wavelengths don't even reach your eye. Portions of it are absorbed and filtered out in the atmosphere...
Our eyes are sensitive to a very tiny part of the spectrum of the sun's wavelengths, and that's responsible for the way we see our environment. Other creatures seem able to see the ultraviolet area of the spectrum. We can only see a tiny part of what's going on." (NatGeo on Beautiful Sunsets)
Meron akong nakita
Dalwang taong masaya
Sa tuktok ng bundok,
Tanong sa sarili, ito ba'y pag-ibig?
Dahil hindi na maitago ang kilig.
Ngunit biglang ginising ng lamig
Pagmulat ng mata
Kasama'y hanap na
Ang nakitang dalawa
Ang totoo ay mag-isa.