HELENA OR THE SEA IN SUMMER (JULIÁN AYESTA) AND VISIBLE SPECTRUM

All these doubts came from the fact that humans can´t really know anything of truly happens in the World. For instance, we can only see the colours between red and blue, but there are more of them. And then, tehre´s all this fuss about vibration speed and about infrared and ultraviolet

Visible light is the intervale of wavelengths or frequencies visible to the human eye. Outside this intervale are radio waves, micorwaves, infrared, ultraviolet, X rays... It seems appropiate, as an image of all the things mankind cannot iluminate with is knowledge. I like even more how the author admits that this is a mess, it reminds me of another text by Cela that reads "you don´t know a word about this"