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Variation of the variation
Глоссарий морской лексики и терминологии (английский язык) |
Is the change in the declination of the needle observed at different times in the same place.
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Declination, английский
- N грм. склонение (тж. declension)
- Of a celestial object, is the arc between its centre and the equinoctial: with the sun, it is its angular distance from the equator, either north or south, and is named accordingly.
- In navigation, the angular distance of a heavenly body north or south of the celestial equator.
- The angular change in the course of a borehole induced by deflection techniques, usually expressed in degrees.
- The angular difference between true north and the direction in which a magnetic needle points on a compass.
- Sometimes a synonym for inclination. see
- Склонение; магнитное склонение ~ of needle склонение магнитной стрелки
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Vedette, английский
- One or two cavalry soldiers stationed on the look-out.
- [1] naval: a small launch used for reconnaissance. [2] military: a mounted scout or sentinel.
Variation of the moon, английский
An inequality in the movement of our satellite, amounting at certain times to 37` in longitude: it was the first lunar inequality explained by newton on the principles of gravitation.
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