Armillary spheres were developed by the Greeks and were used as teaching tools already in the 3rd century BCE.

Armillary spheres were among the first complex mechanical devices.

He is often shown flying in the sky riding on the Wind Fire Wheels (), has the Universe Ring () around his body ( sometimes in his left hand ), the Red Armillary Sash () around his shoulders and a Fire-tipped Spear () in his right hand.

The Armillary sphere # History | spherical astrolabe, long employed in medieval Islamic astronomy, was introduced to Europe by Gerbert d ' Aurillac, later Pope Sylvester II.

The Crown of João VI and the Sceptre of the Armillary.

" Reconstruction of the Armillary Spheres of Mid-Chosun: The Armillary Clocks of Yi Minchol.

A summary is in Zhang Heng's article Armillary sphere.

* Deer's eye t. 7 Incinerated city ( Miasto spopielone, 2011 ) has been canceled due to the story's closure in a previous book Armillary sphere

Jennewein's work received some attention when his Noyes Armillary Sphere disappeared during a riot in Washington, D. C. in the turbulent 1960s.

* The symbol of Salazar's Portuguese Estado Novo regime was a stylized version of the Armillary sphere and shield found on the national flag ; its rivals in the Movimento Nacional-Sindicalista used the Order of Christ Cross.

" Essentials of a New Method for Mechanizing the Rotation of an Armillary Sphere and a Celestial Globe "), written in 1092, was the final product of his life's achievements in horology and clockwork.

These bonds exist between two particular identifiable atoms, and have a direction in space, allowing them to be shown as single connecting lines between atoms in drawings, or modeled as sticks between spheres in models.

This is because Federalism is not a fixed allocation of spheres of central and provincial autonomy ( as assumed in federal finance models ) or a particular set of distribution of authority between governments, it is a process, structured by a set of institutions, through which authority is distributed and redistributed.

Whether or not the story is apocryphal, it would only demonstrate the mathematical equivalence of a rotating earth to rotating spheres, as was well known to Khayyam's immediate predecessors, e. g. al-Biruni, and says nothing about heliocentrism, as a spinning earth can be made entirely consistent with geocentric models.

In the early 11th century CE, Ibn al-Haytham presented a development of Ptolemy's geocentric epicyclic models in terms of nested celestial spheres.

While " radius " normally is a characteristic of perfect spheres, the term as employed in this article more generally means the distance from some " center " of the Earth to a point on the surface or on an idealized surface that models the Earth.

Strictly speaking, spheres are the only solids to have radii, but looser uses of the term " radius " are common in many fields, including those dealing with models of the Earth.

In a later book, the Planetary Hypotheses, Ptolemy explained how to transform his geometrical models into three-dimensional spheres or partial spheres.

Before it became possible to simulate molecular dynamics with computers, some undertook the hard work of trying it with physical models such as macroscopic spheres.

The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus and others.

In these celestial models the stars and planets are carried around by being embedded in rotating spheres made of an aetherial transparent fifth element ( quintessence ), like jewels set in orbs.

Instead of bands, Plato's student Eudoxus developed a planetary model using concentric spheres for all the planets, with three spheres each for his models of the Moon and the Sun and four each for the models of the other five planets, thus making 26 spheres in all. Callippus modified this system, using five spheres for his models of the Sun, Moon, Mercury, Venus, and Mars and retaining four spheres for the models of Jupiter and Saturn, thus making 33 spheres in all.

The " One " is further separated into spheres of intelligence ; the first and superior sphere is objects of thought, while the latter sphere is the domain of thought.

Celestial objects were described as moving in circles, because perfect circular motion was considered an innate property of objects that existed in the uncorrupted realm of the celestial spheres.

Other mathematical principles evidenced in his works include the superposition of a hyperbolic plane on a fixed 2-dimensional plane, and the incorporation of three-dimensional objects such as spheres, columns and cubes into his works.

Bacon was able to use parts of glass spheres as magnifying glasses to demonstrate that light reflects from objects rather than being released from them.

Basic three-dimensional geometric forms ( prisms, cylinders, spheres, and so on ) have solid volumes added or subtracted from them, as if assembling or cutting real-world objects.

Just as in painting, Cubist sculpture is rooted in Paul Cézanne's reduction of painted objects into component planes and geometric solids ( cubes, spheres, cylinders, and cones ).

The " Belaya Rus '" Slavic Council was founded in June 1992 as a conservative Russophile group that defends Russian interests in all spheres of social life, vociferously objects to the status of Belarusian as the republic's sole official language, and demands equal status for the Russian language.

He was the first to realize that the concentric spheres of Eudoxus of Cnidus and Callippus, unlike those used by many astronomers of later times, were not to be taken as material objects, but only as part of an algorithm similar to the modern Fourier series.

Considerable self-doubt and uncertainty may be experienced, leading to ' personal incapacitation expressed through an unsettling shyness in the presence of the person ' - something which causes pain, but also enhances desire to a certain extent, and can also spread to situations involving other potential limerent objects, though generally it does not affect other spheres of life.

Hollow objects are typically cast in two halves, and Savage-Smith indicates that the casting of a seamless sphere is considered impossible, though techniques such as Rotational molding have been used since at least the ' 60s to produce similarly seamless spheres.

His " telekinetic theory of levitation " claimed that luminiferous ether or a similar energy causes the moving of tables and other objects under given conditions, and that the motions which are set up in the ether are in some way connected with mental activities, which enable the mind to control the movement of objects through the hands and the spheres flowing forth through them.

Most questions in discrete geometry involve finite or discrete sets of basic geometric objects, such as points, lines, planes, circles, spheres, polygons, and so forth.

Typically they are the objects of simple shape: cuboids, cylinders, prisms, pyramids, spheres, cones.

* There is a Render Extension that will render objects onto your file via menu settings, examples include barcodes, calendars, grids, gears, spirographs, spheres and more.

He claimed that in a symmetric universe wherein only two symmetrical spheres exist, the two spheres are two distinct objects, even though they have all the properties in common.

His " telekinetic theory of levitation " claimed that luminiferous ether or a similar energy causes the moving of tables and other objects under given conditions, and that the motions which are set up in the ether are in some way connected with mental activities, which enable the mind to control the movement of objects through the hands and the spheres flowing forth through them.

As to the simplicity of maps, there are a number of basic objects in a map: boxes, pyramids, teleporters, cones, arcs, cylinders, spheres, team bases and meshes.

This makes bounding spheres appropriate for objects that can move in any number of dimensions.

In dynamical simulation, bounding boxes are preferred to other shapes of bounding volume such as bounding spheres or cylinders for objects that are roughly cuboid in shape when the intersection test needs to be fairly accurate.

And ( 3 ) the consciousness that perceives and discriminates between spheres of objects ( i. e., the sixth or sense-centre consciousness or Manovijnana and the five sense consciousnesses ).