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The list also includes a final year of operation for many observatories that are no longer in operation. While other sciences, such as volcanology and meteorology , also use facilities called observatories for research and observations, this list is limited to observatories that are used to observe celestial objects.
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.
Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. [1] [2] Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts.
Weather stations typically have these following instruments: Thermometer for measuring air and sea surface temperature; Barometer for measuring atmospheric pressure; Hygrometer for measuring humidity; Anemometer for measuring wind speed; Pyranometer for measuring solar radiation; Rain gauge for measuring liquid precipitation over a set period ...
This is a list of what are intended to be the notable top hotels by country, five or four star hotels, notable skyscraper landmarks or historic hotels which are covered in multiple reliable publications.
This is a list of hotels in the United States, both current and defunct, organized by state. The list includes highly rated luxury hotels , skyscraper rated buildings, and historic hotels. It is not a directory of every chain or independent hotel building in the United States.
Approximate locations of sunset on the horizon as described above can be found in Refs. [ 8 ] [ 9 ] The figure on the right is calculated using the solar geometry routine as follows: [ 10 ] For a given latitude and a given date, calculate the declination of the Sun using 0 ∘ {\displaystyle 0^{\circ }} longitude and solar noon time as inputs ...
The detailed images recorded by SDO in 2011–2012 have helped scientists uncover new secrets about the Sun. The Solar Dynamics Observatory (SDO) is a NASA mission which has been observing the Sun since 2010. [4]