A method of solving the various problems involving course, distance, difference of latitude, difference of longitude, and departure by considering them in the relation in which they are plotted on a Mercator chart. It is similar to plane sailing, but uses meridional difference and difference of longitude in place of difference of latitude and departure, respectively.
Related Terms |
ADJUSTABLE DIFFERENTIAL
A means of changing the difference between the control cut-in and cut-out points.
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SPREAD
The divergence of the air stream in a horizontal or vertical plane after it leaves the outlet.
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ADSORPTION
Adhesion of the molecules of gases, liquids, or dissolved substances to a solid surface, resulting in relatively high concentration of the molecules at the place of contact; e.g. the plating out of an anti-wear additive on metal surfaces.
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HARMONIC CONSTANTS
The amplitudes and epochs of the harmonic constituents of the tide or tidal current at any place
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HIGH WATER INEQUALITY
The difference between the heights of the two high waters during a tidal day
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GRID MAGNETIC ANGLE
Angular difference in direction between grid north and magnetic north. It is measured east or west from grid north. Grid magnetic angle is sometimes called GRID VARIATION or GRIVATION.
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HELIOCENTRIC PARALLAX
The difference in the apparent direction or positions of a celestial body outside the solar system, as observed from the earth and sun. Also called STELLAR PARALLAX, ANNUAL PARALLAX
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DIFFERENTIAL PRESSURE INDICATOR
An indicator which signals the difference in pressure between any two points of a system or a component.
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SHEAR RATE
The difference between the velocities along the parallel faces of a fluid element divided by the distance between the faces.
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FRETTING
Wear phenomena taking place between two surfaces having oscillatory relative motion of small amplitude.
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