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Prior to photographic methods to determine magnitude, the brightness of celestial objects was determined by visual photometric methods.This was simply achieved with the human eye by compared the brightness of an astronomical object with other nearby objects of known or fixed magnitude: especially regarding stars, planets and other planetary objects in the Solar System, variable stars [1] and ...
Factor ()Multiple Value Item 0 0 lux 0 lux Absolute darkness 10 −4: 100 microlux 100 microlux: Starlight overcast moonless night sky [1]: 140 microlux: Venus at brightest [1]: 200 microlux
Luminosity is an absolute measure of radiated electromagnetic energy per unit time, and is synonymous with the radiant power emitted by a light-emitting object. [1] [2] In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical objects. [3] [4]
The Lake Minatare Lighthouse is a historic mock lighthouse located on Lake Minatare near the city of Scottsbluff in Nebraska. The 55-foot (17 m) tower was built by the Veterans Conservation Corps in 1939 and is currently located within the North Platte National Wildlife Refuge. Designed as a combination shelter house and observation tower, it ...
The Tri-Cities is an area of Nebraska consisting of the cities of Grand Island, Hastings, and Kearney.It has a population of 174,530 as of 2020. [1] [2] [3] The Tri-Cities region is not an official Metropolitan Statistical Area or Combined Statistical Area, however the region would be Nebraska's third largest if it was, behind Lincoln but ahead of Sioux City.
Minden bills itself as "Nebraska's Christmas City", illuminating the courthouse square with a display of over 12,000 bulbs and staging an annual Christmas pageant titled "The Light Of The World". The lighting of the courthouse was begun in 1915, when lights were acquired with the intention of stringing them from the railroad station to the town ...
Milburn is an unincorporated community in Custer County, Nebraska, United States. [1] It is located within the boundaries of the 68813 Zip code, serviced out of Anselmo, Nebraska. It is also located at the northwestern edge of the Milburn Township boundary. It is in Nebraska State Senate district 43.
Lincoln is the capital city of the U.S. state of Nebraska.The city covers 100.4 square miles (260.035 km 2) and had a population of 291,082 as of the 2020 census.It is the state's second-most populous city and the 71st-largest in the United States.