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.
2. Acetate fiber is the man-made fiber that is made of cellulose acetate, which is the acetic acid ester of cellulose. It has a very long history, and was first produced in 1923 by an English company, Celanese, in the form of diacetate silk.cetate fiber is produced by reacting high purity wood pulp with acetic anhydride. The acetate flakes that are produced through this chemical reaction are dissolved in a solvent, filtered, and adjusted to obtain spinning stock solution.