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An astronomical instrument is a device for observing, measuring or recording astronomical data. They are used in the scientific field of astronomy , a natural science that studies celestial objects and the phenomena that occur in the cosmos, with the object of explaining their origin and evolution over time.
An instrument invented by the mathematician and astronomer Bhaskara II (1114–1185 CE) consisted of a rectangular board with a pin and an index arm. [39] This device – called the Phalaka-yantra – was used to determine time from the Sun's altitude. [39] The Kapālayantra was an equatorial sundial instrument used to determine the Sun's ...
An astrolabe consists of a disk with a wide, raised rim, called the mater (mother), which is deep enough to hold one or more flat plates called tympans, or climates. A tympan is made for a specific latitude and is engraved with a stereographic projection of circles denoting azimuth and altitude and representing the portion of the celestial ...
Opera – art form in which singers and musicians perform a dramatic work combining text (called a libretto) and musical score. Musical instruments – devices created or adapted for the purpose of making musical sounds. Guitars – the guitar is a plucked string instrument, usually played with fingers or a pick. The guitar consists of a body ...
It embraces study of instruments' history, instruments used in different cultures, technical aspects of how instruments produce sound, and musical instrument classification. There is a degree of overlap between organology, ethnomusicology (being subsets of musicology ) and the branch of the science of acoustics devoted to musical instruments.
Space telescopes are used at certain wavelengths where the atmosphere is opaque, or to eliminate noise (thermal radiation from the atmosphere). Optical astronomy is the part of astronomy that uses optical instruments (mirrors, lenses, and solid-state detectors) to observe light from near- infrared to near- ultraviolet wavelengths.
Space archaeology – the study of human artifacts in outer space; Forensic astronomy – the use of astronomy, the scientific study of celestial objects, to determine the appearance of the sky at specific times in the past. Techniques used in astronomical research: Theoretical astronomy – mathematical modelling of celestial entities and ...
The arts or creative arts are a vast range of human practices of creative expression, storytelling, and cultural participation. The arts encompass diverse and plural modes of thinking, doing, and being in an extensive range of media. Both dynamic and a characteristically constant feature of human life have developed into stylized and intricate ...