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.

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

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.

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

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 .

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

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

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.

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.

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

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.

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.

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