torstai 28. toukokuuta 2009
Tuulivoimalat vaara lentoliikenteelle
Tässä TIME n kertomaa
"Wind farm turbines create a Doppler effect as they turn, which shows up on radar screens. As the area and number of these wind farms has increased, the number of radar blackout zones has also risen. Aircraft passing through the area can disappear in the blackout and air traffic controllers can lose their exact position"