The iconic, spine-tingling line from Poltergeist, “They’re here…” is on the lips of wide-eyed mid-westerners during the deafening invasion of 17-year cicadas...
This is a guest post by Tom Murphy. Tom is an associate professor of physics at the University of California, San Diego. This post first appeared on Tom's blog Do the Math.
Batteries fail—as certainly as death and taxes....