Each year in the middle of February, when the Horsetail Waterfall in Yosemite is roaring, the sun angle before sunset is just right, and no clouds are covering the sky, the waterfall glows for a couple of minutes from orange to a deep red.
Thousands of people wait for hours to see the magic, including myself. And when it happens, a loud cheer echos through the valley. A special moment. While physics may explain the glowing invoking possibly “nonlinear optics and Mie scattering” on the fine water droplets generated by the fall, “Magic” is the birthplace of primitive religions and all the belief stuff that humans can imagine…
