Maneuvering Loads and the V-n Diagram. The V-n, velocity-versus-load diagram, Figure 1, describes the relationship between an aircraftâs. speed, its longitudinal (pitch axis) maneuvering. capability, and its structural strength. The. positive-g, maximum lift line indicates how. aggressively, at any airspeed, we can apply aft.
Fairbanks, Alaska. During the early 19th century, some of the best scientific minds of the period believed that the aurora was caused by the reflection of sunlight from tiny ice crystals suspended high in the atmosphere.
Northern and Southern lights. An Aurora is a natural electric phenomenon that creates bright and colorful light displays in the skies. Auroral light displays are common at higher latitudes, and most auroral activity generally occurs within the Arctic and the Antarctic Circles. Aurora Borealis as seen in Michigan, US. Â©iStockphoto.com/Constance McGuire. Auroras that occur in the Arctic Circle are known as aurora borealis or northern lights, while auroras in the antarctic circle are known as aurora australis or southern lights.