How do air parcels respond to a horizontal air pressure gradient? A horizontal pressure gradient refers to air pressure changes along a surface of constant altitude. The horizontal wind is governed by interactions of the pressure gradient force, centripetal force, Coriolis Effect, friction, and gravity. The pressure gradient force initiates air motion and arises in part from spatial variations in air temperature and, to a lesser extent, water vapor concentration.
Carbon fiber was invented in 1958 by Roger Bacon. It used Rayon  fibers which where heated until carbonized to create a highly  durable and strong material.
SPANDEX. 1  The first commercial production of spandex fiber in the United States was in 1959 by E. I. du Pont de Nemours & Company, Inc. 2  It is an elastomeric man-made fiber (able to stretch at least 100% and snap back like natural rubber). 3  Spandex is used in filament form.