solar physics

A study of the physical phenomena presented by the sun. IMG:content-1699.png:[blocks in formation] solar-plexus, s. solarism Anat .: A plexus at the upper part of the abdomen behind the stomach and in front of the aorta and the pillars of the diaphragm. It is the largest of the pre-vertebral centers. Called also the Epigastric Plexus. SUN.] solar-prominences, s. pl. [PROMINENCE, II. 1., solar-spectrum, s. [SPECTRUM.] solar-spots, s. pl. [SUN-SPOTS.]