A thermometer whose sensitive element has been made to approximate a black body by covering it with lampblack.
Related Terms |
ARMATURE VARNISH
Is a liquid put on the field and armature windings, to improve the insulation of the cotton covering on the wires.
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ICE MASSIF
A concentration of sea ice covering an area of hundreds of kilometers, which is found in the same region every summer
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LARGE SCALE
A scale involving a relatively small reduction in size. A large-scale chart is one covering a small area. The opposite is SMALL SCALE.
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ORLOP DECK
The lowest deck of a ship of the line. The deck covering in the hold.
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BAGGYWRINKLE
A soft covering for cables (or any other obstructions) that prevents sail chafing.
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ANTARCTIC WHITEOUT
The obliteration of contrast between surface features in the Antarctic when a covering of snow obscuring all landmarks is accompanied by an overcast sky, resulting in an absence of shadows and an unrelieved expanse of white, the earth and sky blending so that the horizon is not distinguishable. A similar occurrence in the Arctic is called ARCTIC WHITEOUT.
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ARCTIC WHITEOUT
The obliteration of contrast between surface features in the Arctic when a covering of snow obscuring all landmarks is accompanied by an overcast sky, resulting in an absence of shadows and an unrelieved expanse of white, the earth and sky blending so that the horizon is not distinguishable. A similar occurrence in the Antarctic is called ANTARCTIC WHITEOUT.
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CHART PORTFOLIO
A systematic grouping of nautical charts covering a specific geographical area.
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CONSTELLATION
A group of stars which appear close together, regardless of actual distances, particularly if the group forms a striking config- uration. Among astronomers a constellation is now considered a region of the sky having precise boundaries so arranged that all of the sky is covered, without overlap. The ancient Greeks recognized 48 constellations covering only certain groups of stars. Modern astronomers recognize 88 constellations.
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EQUILIBRIUM THEORY
A model under which it is assumed that the waters covering the face of the earth instantly respond to the tide-producing forces of the moon and sun, and form a surface of equilibrium under the action of these forces. The model disregards friction and inertia and the irregular distribution of the land masses of the earth. The theoretical tide formed under these conditions is called EQUILIBRIUM TIDE.
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