Fig5_7 Sound Paths

Fig5_7 Sound Paths

Fig. 5.7 . The trajectories of sound waves are shown in a cross section of the solar interior. The rays are bent inside the Sun, like light within the lens of an eye, and circle the solar interior in spherical shells called resonant cavities. Each shell is bounded at the top by a large, rapid density drop near the photosphere and bounded at the bottom at an inner turning point where the bending rays undergo total internal refraction, owing to the increase in sound speed with depth inside the Sun.

Copyright 2010, Professor Kenneth R. Lang, Tufts University