Color is an interesting thing, it’s both quantitative and qualitative. Today, I’m going to talk about its quantitative nature. I’m sure most people know that visible light comes from a specific region of the electromagnetic spectrum, but they probably don’t understand why certain things are specific colors. 1,764 more words
Meanwhile, in Antarctica, the search for signatures of primordial gravitational waves in the polarization of the cosmic microwave background goes on. Here's a fascinating blog by a member of the SPIDER team, whose balloon-borne experiment was recently launched and is currently circling the South Pole taking data. Here's hoping it works out as planned!