Ed Nauman owns a house situated just
uphill from some city-owned property that provides his yard with an endless
supply of pocket gophers. He has tried to defeat them from digging up his
yard, but without much success until he tried a siren with several annoying
tones. A simple timing circuit drives the siren with a low duty cycle. As Bill
Murray said in Caddyshack, "In
the immortal words of Jean Paul Sartre, 'Au revoir, gopher.'"
In a line of ultra-futuristic projects, DARPA is developing a brain microchip that will help heal the bodies and minds of soldiers. A final product is far off, but preliminary chips are already being tested.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.