- The heat death of the universe (also known as the Big Chill or Big Freeze) is a hypothesis on the ultimate fate of the universe, which suggests the universe will evolve to a state of no thermodynamic free energy, and will therefore be unable to sustain processes that increase entropy. Heat death does not imply any particular absolute temperature; it only requires that temperature differences or other processes may no longer be exploited to perform work. In the language of physics, this is when the universe reaches thermodynamic equilibrium. The Heat Death theory has become the leading theory in the modern age with the fewest unpredictable factors.
- Wild Horse Wind Farm (Wikipedia)
The Wild Horse Wind Farm is a 273-megawatt wind farm that generates energy for Puget Sound Energy that consists of one hundred twenty seven 1.8-megawatt Vestas V80 turbines and twenty two 2.0-megawatt Vestas V80 turbines on a 10,800-acre (4,400 ha) site in Kittitas County, Washington, 17 miles (27 km) east of Ellensburg, Washington. The turbines are placed on the high open Shrub-steppe ridge tops of Whiskey Dick Mountain, which was chosen for its energetic wind resource, remote location, and access to nearby power transmission lines. The towers are 221 feet (67 m) tall, and each blade is 129 feet (39 m) long, with a total rotor diameter of 264 feet (80 m), larger than the wingspan of a Boeing 747. The turbines can begin producing electricity with wind speeds as low as 9 mph (14 km/h) and reach full production at 31 mph (50 km/h). They shut down at sustained wind speeds of 56 mph (90 km/h). The site is also home to one of the largest solar array (500 kW) in Washington.