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1
Understanding the Heavens: Thirty Centuries of Astronomical ...
This is done by measuring the diurnal parallax of the Sun. Even though the
distances of the Sun and Moon were relatively known, at least approximately, the
determination of the diurnal parallax of the Sun and of the planets was a major
step ...
2
A treatise of astronomy: wherein the
diurnal motions of the ...
Hence the Horizontal Parallax of a " Star, is the greatest diurnal Parallax of that "
Star. ** 2. Hence when a Star is upon the SemiV " Meridian of 53, its diurnal
Parallax is the " least it can be that Day. **- And when a Star upon the Semi-
Meridian ...
3
A Manual of Astronomy and the use of the Globes
Henry KIDDLE (Superintendent of Public Schools, New York City.) The True
Place, is that in which it would seem to be, if viewed from the centre of the Earth.
The Diurnal Parallax of a body, is the difference between its true and apparent
place.
Henry KIDDLE (Superintendent of Public Schools, New York City.), 1852
4
Explanatory Supplement to the Astronomical Almanac
The term is usually used in connection with a shift of origin from the center of the
Earth to the surface (diurnal parallax), or a shift from the barycenter or heliocenter
to the geocenter (annual parallax). The following is a simple and rigorous ...
P. Kenneth Seidelmann, 2006
5
Cassell's Educator for the Young, etc. [Another edition of ...
260 the sun is about eight seconds. at the horizon, and diminishes is nothing. to
diminish the altitude of a The horizontal parallax of Diurnal parallax is greatest
towards the zenith, where it The effect of parallax is body. In figure 31, let Z H ...
6
Institutes of Natural Philosophy ... Second edition, etc
The diurnal parallax of a planet in a vertical circle produces a parallaxxof
declination, and also, if the planet is not in the meridian, of right ascension. ' Let
HQ__ be the horizon; EC an arc of the equator, which cuts the horizon at C ; P the
pole of ...
William Enfield, Alexander EWING (Teacher of Mathematics, Edinburgh.), Samuel WEBBER (President of Harvard College, Mass.), 1802
7
An Introduction to Astronomy: Designed as a Textbook for the ...
... in this way with sufficient accuracy. The parallax of the sun is less than 9”; that
of nearly all the planets is much smaller than this; and as to bodies outside of the
solar system, they afi'ord not the slightest indication of any diurnal parallax. Fig.
Denison Olmsted, Ebenezer Strong Snell, 1868
8
The new American grammar of the elements of astronomy on an ...
Now, drawjng CPm, m is the place of P as seen from the centre, and n from the
surface ; the arc mn is the diurnal parallax of the object when seen from H, in the
position P. And, when the planet appears in the horizon at h, the arc rs is the ...
9
Institutes of Natural Philosophy: Theoretical and Practical
Prop. LXIX.) inversely as the planet's distance from C. Therefore the parallaxes of
these planets are inversely as their distances from the centre of the earth. PROP.
OXXX. The diurnal parallax of a planet in a vertical circle generally produces a ...
William Enfield, Samuel Webber, 1820
10
A Treatise on Astronomy
Diurnal parallax defined. — The direction in which a celestial body would be
seen if viewed from the centre of the earth, is called its true place ; and the
direction in which it is seen from any point on the surface, is called its apparent
place.
