Smiley Derleth

Smiley Derleth

Posted on 03/16/2016


Photo taken on March 16, 2016


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Sound travels through the air

Sound travels through the air
Today's Basic Science 2
Harper & Row, 1963, 1965

www.youtube.com/watch?v=_iQqEqu3eL0

forever is a long time has particularly liked this photo


Comments
Fantasyfan
Fantasyfan
Nicely educating :)
2 years ago.
Smiley Derleth
Smiley Derleth
I think so too. It is always amazing. Thanks, Fantasyfan.
2 years ago.