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Book I chapters 1–11 are a general vision of the heliocentric theory, and a summarized exposition of his cosmology. The world (heavens) is spherical, as is the Earth, and the land and water make a single globe. The celestial bodies, including the Earth, have regular circular and everlasting movements.
It is useful for the celestial coordinates or orbital elements of a celestial body, as they are subject to perturbations and vary with time. [1] These time-varying astronomical quantities might include, for example, the mean longitude or mean anomaly of a body, the node of its orbit relative to a reference plane , the direction of the apogee or ...
The game often transposes to a Nimzo-Indian Defence, a Dutch Defence, a Queen's Gambit Declined, an English Defence, or a Bogo-Indian Defence. 3.Nc3 is likely to transpose into one of those openings: 3...Nf6 (Nimzo-Indian), 3...f5 (Dutch; Korn gives 3...Bxc3+ 4.bxc3 f5!, [3] played by Buckle) 3...d5 (an unusual form of QGD), or 3...b6 (English ...
Also, when Achilles and Hector were about to engage in a fight to the death, the god Zeus weighed both warriors' keres to determine who shall die. [7] As Hector’s ker was deemed heavier, he was the one destined to die and in the weighing of souls, Zeus chooses Hector to be killed. [8] During the festival known as Anthesteria, the Keres were ...
In the August 1980 edition of Dragon (Issue 40), Roberto Camino welcomed the addition of large starships to the Traveller game, but noted a design decision that he called questionable: that the number of minor weapons do not increase at the same rate as the ship's surface area, so larger ships, which should have more firepower, actually have ...
A diagram of a typical nautical sextant, a tool used in celestial navigation to measure the angle between two objects viewed by means of its optical sight. Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current physical position in space or on the ...
Visualization of a celestial sphere. In astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth.All objects in the sky can be conceived as being projected upon the inner surface of the celestial sphere, which may be centered on Earth or the observer.
In fiction, Adamant is referred to in the film Forbidden Planet (as "adamantine steel"), many books (such as The Adventures of Tom Sawyer, The Faerie Queene, Gulliver's Travels, His Dark Materials, The Lord of the Rings, Mathilda by Mary Shelley, and A Midsummer Night's Dream) and many games (such as Dungeons & Dragons, Final Fantasy and ...