If you really want to measure the power precisely, you mount the generator on gimbals and measure the torque with a scale on an arm. Or a big copper disk with electro magnets for drag. Or a drum (prony brake) filled with water and you measure the torque on its brake with a scale. You measure speed separately and you need both for power. Or you make a fan and spin it in air and someway you can compute the load based on the air temperature and the speed. Its harder to vary the load on the fan. Called a Baker fan. A disk brake from a train might be a good tractor prony brake too. Just measure the torque reaction on the brake mounting.
During the seal hunting season out on the Hudson Bay, polar bears absorb oils from the seals and appear yellow in color. Underneath this thick âwhiteâ fur is a black skin layer with four and a half inches of fat below that. Polar bear skin is black underneath the transparent guard hairs. Brad Josephs photo. When a polar bear is on land or on the sea ice surface the thick fur coat is what insulates the bear from the cold. However, when polar bears are swimming in water, the thick fat layer is what protects them from the frigid cold.
From Wikipedia, the free encyclopedia. The glacier bear (Ursus americanus emmonsii), sometimes referred to as the blue bear, is a subspecies of American black bear with silver-blue or gray hair endemic to Southeast Alaska. Little scientific knowledge exists of their total extent and the cause of their unique coloration.he chief feature distinguishing the glacier bear from other black bears is its pelage (hair coloration), which ranges from silvery blue to gray. The subspecies was reported by Dall in 1895.