. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. AEROGRAPHER'S MATE 3 & 2 at right angles across isobars (lines connecting points of equal barometric pressure) from high to low pressure. From observation we know the wind actually blows parallel to isobars above any frictional level. Therefore, other factors must be affecting the windflow, and one of these factors is the rotation of the earth. A particle at rest on the earth's surface is in equilibrium. If the particle starts to move because of a pressure gradient force, its relative motion is affected by the
. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. AEROGRAPHER'S MATE 3 & 2 at right angles across isobars (lines connecting points of equal barometric pressure) from high to low pressure. From observation we know the wind actually blows parallel to isobars above any frictional level. Therefore, other factors must be affecting the windflow, and one of these factors is the rotation of the earth. A particle at rest on the earth's surface is in equilibrium. If the particle starts to move because of a pressure gradient force, its relative motion is affected by the rotation of the earth. If a mass of air from the Equator moves northward, it is deflected to the right, so that a south wind tends to become a south- westerly wind. An air mass moving from the North Pole tends to become a northeasterly wind. This deflection is known as the Coriolis effect and is stated as a law. (See fig. 12-10.) This law states that when a mass of air starts to move over the earth's surface, it is deflected to the right of its path in the Northern Hemisphere and to the left of its path in the Southern Hemisphere. Coriolis effect is dependent upon the latitude and speed of the moving air mass. It is greatest at the poles and nonexistent at the Equator. It increases as the speed of the moving air mass increases. Centrifugal Effect According to Newton's first law of motion, a body in motion continues in the same direction in a straight line and with the same speed unless acted upon by some external force. Therefore, for a body to move in a curved path, some force must be continually applied. The force restraining bodies to move in a curved path is called the centripetal force, and it is always directed toward the center of rotation. When a rock is whirled around on a string, the centripetal force is afforded by the tension of the string. Newton's third law states that for every action there is an equal and opposite reaction. Centrifugal force is the reacting forc
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Keywords: ., bookcentury1900, booksubjectmeteorology, booksubjectunitedstates
