Cortes cortÃ©s set out to rule. Them during the march Through, mexico he encountered a group of natives called The, tlaxcalans who were enemies of The. Aztecs they became an important ally For cortes cortÃ©s during his Siege, of Tenochtitlan tenochtitlÃ¡n the. aztec capital city
The World's Biggest Wind Turbine Blades Are So Long Their Tips Spin at 180 MPH. For off-shore wind farms to become an economically feasible alternative energy source, each turbine needs to be big. Like, really big. That's why the latest turbine blade from Siemens is giganticâjust a hair shorter than the wingspan of an Airbus 380.
Wind turbines cannot work if there is no wind, or if the wind speed is so high it would damage them. Wind turbines are usually sited on high hills and mountain ridges to take advantage of the prevailing winds. Just like a windmill, wind energy turbines have been around for over 1000 years.