The 22 degree halo around the Sun

22 January 2018.  All of our students came out to see the 22-degree halo around the Sun this afternoon.  We hope you saw it at home or at work.  It arises from light refraction by ice crystals in light clouds.  There’s a good description in the book, Color and Light in Nature, by David Lynch and William Livingston.  The halo is actually overlapping halos of different colors of the rainbow, each one at a slightly different angle.  When something so interesting happens at our school, we take the time out to appreciate it…time out, for something beautiful, for something scientifically interesting, for something that’s both, such as this.