A method of converting departure into difference of longitude, or vice versa, when the true course is 090° or 270°.
Related Terms |
ADJUSTABLE DIFFERENTIAL
A means of changing the difference between the control cut-in and cut-out points.
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TO HAUL
To change the course of a sailing vessel to bring the wind farther forward, usually used with up, such as haul up.
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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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GROUND LOG
A device for determining the course and speed over the ground in shallow water consisting of a lead or weight attached to a line. The lead is thrown overboard and allowed to rest on the bottom. The course over ground is indicated by the direction the line tends and the speed by the amount of line paid out in a unit of time.
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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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DIFFERENTIAL PRESSURE INDICATOR
An indicator which signals the difference in pressure between two points, typically between the upstream and downstream sides of a filter element.
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COALESCOR
A separator that divides a mixture or emulsion of two immiscible liquids using the interfacial tension between the two liquids and the difference in wetting of the two liquids on a particular porous medium.
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