Looking Through Paintings to See What’s Hidden - Facts So Romantic
▻http://nautil.us/blog/looking-through-paintings-to-see-whats-hidden
This post originally ran on Facts So Romantic in May, 2013. There is more to the world than meets the human eye, a fact that hit home for the 18th-century astronomer Sir Frederick William Herschel when he discovered infrared light—a wavelength of light that lies just outside the visible portion of the electromagnetic spectrum. We can feel its heat, but we can’t see the light—not without special equipment designed to be sensitive in this regime.It’s somehow fitting that this invisible form of radiation is now used by infrared telescopes to “see” through interstellar dust in our universe to image distant, hidden galaxies, among other celestial objects—not to mention the increasingly common use of infrared (IR) photography here on Earth. A simple image of a park on a sunny day is transformed in (...)