Sci-Five | The Hindu Science Quiz: On Astronomical Instruments
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What is an armillary sphere?
- A model of objects in the sky, representing lines of celestial longitude and latitude
- An ancient astronomical instrument used for navigation
- A type of instrument used to observe planets
- A device for measuring atmospheric pressure
An armillary sphere is a model of objects in the sky, consisting of a spherical framework of rings, centred on Earth or the Sun, that represent lines of celestial longitude and latitude and other astronomically important features, such as the ecliptic.