Consumer windpower products still have to prove their Return On Investment. However, after being bombarded with commercials about (local) windpower successes. You can’t blaim many consumers wondering what the potential of their backyard is.  Thanks to a new iPhone app, they know now. One of the newest iPhone apps turns the phone  into an anemometer to clock wind speeds for those considering installing a backyard turbine. Mariah Power is introducing a program that will let you measure the wind speed around your house by pointing your iPhone toward the sky. The application uses the phone’s microphone to capture wind noise. It filters out ambient sound and an algorithm converts the result into [...]  Meer...