Infrared
The term “Infrared” means a portion of the electromagnetic spectrum that lies “beyond the red”, with longer wavelengths then of the color red (in the visible spectrum) and shorter wavelengths than microwave.
The discovery of infrared (IR) dates back to 1800. Many important discoveries were made in the following decades up to the present day, with infrared detectors fixed on aircrafts and satellites for a continuous scanning of our planet and of the deep Universe.
Literary quotes
Light thinks it travels faster than anything but it is wrong.
No matter how fast light travels, it finds the darkness always comes first, and is waiting for it.
(Sir Terry Pratchett)
Better to light a candle than curse the darkness.
(Chinese proverb)
Inside my empty bottle I was building a lighthouse, while all the others were making ships.
(Charles Simic)