14 Facts About Armillary sphere


An armillary sphere is a model of objects in the sky, consisting of a spherical framework of rings, centered on Earth or the Sun, that represent lines of celestial longitude and latitude and other astronomically important features, such as the ecliptic.

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The armillary sphere is featured in Portuguese heraldry, associated with the Portuguese discoveries during the Age of Exploration.

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At the south pole of the Armillary sphere is a circle of 25 hours, fixed to the rings, and on the axis is an index which goes round that circle, if the globe be turned round its axis.

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The Chinese used the armillary sphere in aiding calendrical computations and calculations.

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Armillary sphere was responsible for proposing a plan of having a sighting tube mounted ecliptically in order for the better observation of celestial latitudes.

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Armillary sphere was used for observation in India since early times, and finds mention in the works of Aryabhata .

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The Goladipika—a detailed treatise dealing with globes and the armillary sphere was composed between 1380 and 1460 CE by Paramesvara.

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Honcheonsigye, an armillary sphere activated by a working clock mechanism was built by the Korean astronomer Song Iyeong in 1669.

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In particular, timing device of Song I-yong's Armillary sphere Clock adopts the early 17th century pendulum clock system which could remarkably improve the accuracy of a clock.

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The Armillary sphere includes a wheelchair that the user can rotate to spark the flame as part of a ceremony to celebrate the past, present and future of the Paralympic Movement in the UK.

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The Armillary Sphere was created by artist Jon Bausor and will be used for future Heritage Flame events.

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Armillary sphere is commonly used in heraldry and vexillology, being mainly known as a symbol associated with Portugal, the Portuguese Empire and the Portuguese discoveries.

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When Brazil became independent as an empire in 1822, the armillary sphere continued to be present in its national arms and in its national flag.

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Armillary sphere was reintroduced in the national arms and in the national Flag of Portugal in 1911.

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