Dark Side of the Moon because I used it every year as a prop when I taught lessons on dispersion of light.
What is your favorite album cover?
I extremely love Rhythm Nation 1814 by Janet Jackson. Eschewing a friendly, fun image more conducive to '80s pop chart success, Janet Jackson adopted a militaristic tone for her instantly iconic black-and-white Rhythm Nation 1814 cover art.....That's why I like not only her song but also her soul in music. What about you? What is your favorite album cover?