* Armillary spheres, models of objects in the sky developed by the Greeks, are in use as teaching tools.

Armillary spheres were among the first complex mechanical devices.

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 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.

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

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.

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

" 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.

Carbon molecules known as fullerenes were later named by scientists for their resemblance to geodesic spheres.

The proportions of the spheres of the planets and stars ( which at the time were still thought to revolve around the earth ) were perceived as a form of music, without necessarily implying that any sound would be heard — music refers strictly to the mathematical proportions.

There is a wide array of power-ups, such as a backpack that increases the player character's ammunition-carrying capacity, armor, first aid kits to restore health, the berserk pack ( a dark first aid box that puts the character into berserk mode, allowing him to deal out rocket launcher-level damage with his fists and potentially splattering former humans and imps, as well as setting the user's health to 100 % if it were lower ), supernatural blue orbs ( named soul spheres in the manuals ) that boost the player character's health up to a maximum of 200 %, nightvision, computer maps ( which show every area of the level ), partial invisibility, and protective suits that allow the player to survive in toxic acids.

A different explanation was provided by Desaguliers ( 1725 ), who demonstrated the strong cohesion forces between lead spheres of which a small cap is cut off and which were then brought into contact with each other.

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.

Two interesting experiments were devised by Newton to demonstrate how these forces could be discovered, thereby revealing to an observer that they were not in an inertial frame: the example of the tension in the cord linking two spheres rotating about their center of gravity, and the example of the curvature of the surface of water in a rotating bucket.

His subsequent main astronomical works were in some sense only further developments of it, concerned with finding more precise inner and outer dimensions for the spheres by calculating the eccentricities of the planetary orbits within it.

He noted its fading luminosity, speculated about its origin, and used the lack of observed parallax to argue that it was in the sphere of fixed stars, further undermining the doctrine of the immutability of the heavens ( the idea accepted since Aristotle that the celestial spheres were perfect and unchanging ).

Despite the vast geographical distance and customary spheres separating individual singers, The Kalevala, as well as the folk poetry it is based on were always sung in the same metre.

Integrated into his prints were mirror images of cones, spheres, cubes, rings and spirals.

Most notably, there was also a secret protocol to the pact, revealed only after Germany's defeat in 1945, according to which Romania, Poland, Lithuania, Latvia, Estonia and Finland were divided into German and Soviet " spheres of influence ".

The nomenklatura (, ) were a category of people within the Soviet Union and other Eastern Bloc countries who held various key administrative positions in all spheres of those countries ' activity: government, industry, agriculture, education, etc., whose positions were granted only with approval by the communist party of each country or region.

In the geocentric model of the solar system, the celestial spheres model was originally used to explain the apparent motion of the planets in the sky in terms of perfect spheres or rings, but after the planets ' motions were more accurately measured, theoretical mechanisms such as deferent and epicycles were added.

Each of the spheres were divided into zones ( zonai ) by circles ( kukloi ) in planes at right angles to the poles.

Hamilton used the Ricci flow to prove that some compact manifolds were diffeomorphic to spheres and he hoped to apply it to prove the Poincaré Conjecture.

Perelman discovered the singularities were all very simple: essentially three-dimensional cylinders made out of spheres stretched out along a line.

The three golden spheres were originally a symbol medieval Lombard merchants hung in front of their houses, and not the arms of the Medici family.

It has been conjectured that the golden spheres were originally three flat yellow effigies of byzants, or gold coins, laid heraldically upon a sable field, but that they were converted into spheres to better attract attention.

Hoping to create a vibrant community institution in a run-down neighborhood on Manhattan's west side, Freed developed a glass-coated structure with an intricate space frame of interconnected metal rods and spheres.

File: Archimedes naples statue. jpg | Archimedes ( c. 287 BC – c. 212 BC ): described buoyancy, developed formulae for the areas and volumes of spheres, cylinders, parabolas, worked extensively with levers, invented the Archimedes ' screw, developed siege engines for warfare to impede the Roman invasion of Syracuse.

The KIWI B series fully developed the fuel system, which consisted of the uranium fuel in the form of tiny uranium dioxide ( UO < sub > 2 </ sub >) spheres embedded in a low-boron graphite matrix, and then coated with niobium carbide.

In the fully developed Aristotelian system, the spherical Earth is at the center of the universe, and all other heavenly bodies are attached to 47 – 56 transparent concentric spheres which rotate around the Earth.

During the war he stole plans for the " nullatron ," a device that could control human minds, adapted a space-warping device developed by the cyborg scientist codenamed Brain Drain, and commissioned Nazi scientists to develop a projector which could encircle and suspend sections of cities within spheres of energy.

Averroes ( Ibn Rushd ), Ibn Bajjah ( Avempace ) and Thomas Aquinas developed the theory of inertia in the celestial spheres, while Avicenna ( Ibn Sina ) and Jean Buridan developed the theory of impetus in the celestial spheres.

The cosmological model of concentric or homocentric spheres, developed by Eudoxus, Callippus, and Aristotle, employed celestial spheres all of which had the same center, the Earth.

# Despite these differences, people with more education tend to have better developed cognitive and communication skills, broader social spheres with more and more diverse social contacts, and a greater amount of stored information than their counterparts with less education.

( During the Latin Middle Ages a distinction developed whereby the term " intelligence " was typically used to refer to the incorporeal beings which governed the celestial spheres in many of these accounts.

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

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.

In his Metaphysics, Aristotle developed a physical cosmology of spheres, based on the mathematical models of Eudoxus.

In Aristotle's fully developed celestial model, the spherical Earth is at the centre of the universe and the planets are moved by either 47 or 55 interconnected spheres that form a unified planetary system, whereas in the models of Eudoxus and Callippus each planet's individual set of spheres were not connected to those of the next planet.