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22 Jun 2024 · aurora, luminous phenomenon of Earth ’s upper atmosphere that occurs primarily in high latitudes of both hemispheres; in the Northern Hemisphere auroras are called aurora borealis, aurora polaris, or northern lights, and in the Southern Hemisphere they are called aurora australis or southern lights. A brief treatment of auroras follows.
5 hari yang lalu · The pathogenesis of Raynaud phenomenon has not been completely elucidated 1. It is thought that in patients with Raynaud phenomenon, there is a heightened sympathetic response to triggers such as cold temperatures 5. Under normal circumstances, cold temperatures trigger a sympathetic response 5. Extremities such as fingers and toes have a very ...
6 hari yang lalu · rainbow, series of concentric coloured arcs that may be seen when light from a distant source—most commonly the Sun —falls upon a collection of water drops—as in rain, spray, or fog. The rainbow is observed in the direction opposite to the Sun. The coloured rays of the rainbow are caused by the refraction and internal reflection of light ...
6 hari yang lalu · We specialize in solving many of your favorite puzzles, including the New York Times, USA Today, LA Times, Daily Themed Crosswords, and more. The "Natural phenomenon first witnessed in 1968" clue from the New York Times puzzle, July 02 edition, is one such example.
24 Jun 2024 · NIMBY, a colloquialism signifying one’s opposition to the locating of something considered undesirable in one’s neighborhood. The phrase “not in my backyard,” shortened to “NIMBY,” seems to have appeared first in the mid-1970s. It was used in the context of the last major effort by electric utilities to construct nuclear-powered generating stations, especially those located in ...
24 Jun 2024 · Central sensitization is the phenomenon in which repetitive constant stimulation of the nociceptive system through C-fibre activity results in progressively increasing responses from the dorsal horn cell, thereby causing progressive increase in pain experience. N-methyl D Aspartate (NMDA) receptor is believed to be an important factor ...
