Dick Feynman taught in Rio de Janeiro for a while. He was frustrated at the way Brazilian students of that day learned physics by rote, instead of in labs. In a lecture he looked out from the classroom to the sun dancing on the waves of the Atlantic, and he realized it was a beautiful, brilliant demonstration of light refraction, the topic of the day. Sadly, the students didn’t understand that the beauty before them was a physics problem. (Was that story in Surely You’re Joking, Mr. Feynman, or What Do You Care What Others Think?)
Here, a marriage of physics, moonlight, spring runoff over a cliff, and modern photography, in Yosemite. If you don’t gasp, call your physician and find a new sensei:
(Programs and maintenance of this park are threatened by Republican budget writers, BTW.)
Posted by Ed Darrell 
Millard Fillmore's Bathtub 