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An astronomical instrument is a device for observing, measuring, or recording astronomical data. [citation needed] 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.
Name: Lifespan: Country of work : Giuseppe Campani: 1635–1715 Italy: Matteo Campani-Alimenis: 17th century Italy: Robert-Aglaé Cauchoix: 1776–1845 France: Henri Chrétien: 1879–1956 France Alvan Clark: 1804–1887 US Alvan Graham Clark: 1832–1897 US George Bassett Clark: 1827–1891 US Thomas Cooke: 1807–1868 England Robert E. Cox ...
Arma Christi ("weapons of Christ"), or the Instruments of the Passion, are the objects associated with the Passion of Jesus Christ in Christian symbolism and art. They are seen as arms in the sense of heraldry , and also as the weapons Christ used to achieve his conquest over Satan .
Pluto's name and symbol were announced by the discoverers on May 1, 1930. [92] The symbol, a monogram of the letters PL, could be interpreted to stand for Pluto or for Percival Lowell, the astronomer who initiated Lowell Observatory's search for a planet beyond the orbit of Neptune.
Hazard symbols; List of mathematical constants (typically letters and compound symbols) Glossary of mathematical symbols; List of physical constants (typically letters and compound symbols) List of common physics notations (typically letters used as variable names in equations) Rod of Asclepius / Caduceus as a symbol of medicine
Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...
Instruments commonly part of the percussion section of a band or orchestra. These three groups overlap heavily, but inclusion in any one is sufficient for an instrument to be included in this list. However, when only a specific subtype of the instrument qualifies as a percussion instrument, only that subtype is listed here.
Certain musical instruments used in worshiping deities, from ancient to modern. Before becoming "musical" instruments some drums have their origins in medicine practices , ritual practices , battle needs , communication needs - talking drum .