Search Results: Semidiameter


Diameter
Selasa, 2026-03-31 13:45:47

the centre of the ellipse. Half of any such diameter may be called a semidiameter, although this term is most often a synonym for the radius of a circle...

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Equinox
Rabu, 2026-06-03 04:41:36

atmospheric refraction is assumed to be 34 arcminutes, and the assumed semidiameter (apparent radius) of the Sun is 16 arcminutes. (The apparent radius varies...

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Semi-major and semi-minor axes
Selasa, 2026-01-20 10:59:14

of the perimeter. The semi-major axis (major semiaxis) is the longest semidiameter or one half of the major axis, and thus runs from the centre, through...

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Pi
Kamis, 2026-05-28 01:08:52

{\tfrac {\pi }{\delta }}} ⁠ for denoting the ratios semiperimeter to semidiameter and perimeter to diameter, that is, what is presently denoted as π. (Before...

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Sunrise equation
Senin, 2026-05-04 10:01:40

sunset: h 0 = − s − ψ {\displaystyle h_{0}=-s-\psi } where s is the semidiameter of the Sun, about 16 arcminutes. To calculate the time of the sunrise...

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Diameter (disambiguation)
Sabtu, 2026-05-16 05:11:08

Screw thread#Diameters, several measurements of a threaded screw or bolt Semidiameter, half of the diameter of a circle or sphere Diameter may also refer to:...

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Figure of the Earth
Kamis, 2026-05-21 23:57:04

the two equatorial major and minor axes of inertia, with the larger semidiameter pointing to 15° W longitude (and also 180-degree away). Following work...

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Radius
Kamis, 2026-02-19 03:58:28

convergence Radius of convexity Radius of curvature Radius of gyration Semidiameter The plural of radius can be either radii (from the Latin plural) or the...

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Lunar distance (navigation)
Minggu, 2025-11-09 02:00:33

almanacs give the Moon's and Sun's semidiameter for each day. Additionally the observed altitudes are cleared of semidiameter. Clearing: The lunar distance...

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Vitruvian module
Jumat, 2024-03-29 00:43:54

a term that was in use among Roman architects, corresponding to the semidiameter of the column at its base. The term was first set forth by Vitruvius...

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Semiperimeter
Selasa, 2026-01-13 00:02:36

s=\pi \cdot r.\!} The constant of proportionality is the number pi, π. Semidiameter Johnson, Roger A. (2007). Advanced Euclidean Geometry. Mineola, New York:...

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Backstaff
Senin, 2026-03-02 11:54:26

edge represents the limb of the sun, he must correct the value for the semidiameter of the sun. The Elton's quadrant derived from the Davis quadrant. It...

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Multivariate normal distribution
Rabu, 2026-05-06 01:26:32

matrix Σ {\displaystyle {\boldsymbol {\Sigma }}} (the major and minor semidiameters of the ellipse equal the square-root of the ordered eigenvalues). As...

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Equivalent radius
Senin, 2026-03-09 11:44:19

ellipsoid Earth radius Galaxy effective radius Geoid Geometric mean Semidiameter Bello, Ignacio; Britton, Jack Rolf (1993). Topics in Contemporary Mathematics...

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Maya astronomy
Senin, 2026-04-27 02:06:57

to see a body before its geometric rise or the 0.266,563,88... degree semidiameter of the sun. Atmospheric phenomena like extinction are not considered...

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Navigational algorithms
Jumat, 2026-05-15 21:50:46

used in navigation. GHA - Greenwich Hour Angle Dec - Declination SD - Semidiameter HP - Horizontal Parallax s the solution for course and SOG. They solve...

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Intercept method
Jumat, 2025-12-26 15:28:35

horizon dips below the horizontal). If the Sun or Moon was observed, a semidiameter correction is also applied to find the centre of the object. The resulting...

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Letters on Sunspots
Sabtu, 2025-10-25 22:24:47

times the period another travels DL (as Scheiner claimed), then the semidiameter of the Sun (actually AB) would need to be more than twice as large (i...

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