jerryc41 wrote:
I learn something new every day. I've been watching a science course on The Great Courses, and he mentioned a supernumerary rainbow. Unlike the many variations of rainbows that appear in the sky, this type cannot yet be explained.
I purchased about a half dozen of the Great Courses several years ago. Ironically I tossed them in the trash last week after trying unsuccessfully trying to give them away. Libraries and schools would not accept them due to Covid concerns.