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The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky's brightness of a particular location. It quantifies the astronomical observability of celestial objects and the interference caused by light pollution .
John E. Bortle is an American amateur astronomer. He is best known for creating the Bortle scale to quantify the darkness of the night sky. Bortle has made a special study of comets. He has recorded thousands of observations relating to more than 300 comets. From 1977 until 1994 he authored the monthly '"Comet Digest" in Sky and Telescope magazine.
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This scale is widely referred to by various names, including very commonly "Bortle scale". A large number of the instances of "Bortle Dark-Sky Scale" in books are references to Bortle's paper title "Introducing the Bortle Dark-Sky Scale", which is usually but not always capitalized.
Calamity James, a British comic book character from The Beano; Calamity Jane, a 1953 film based on the person; Calamity Town, a 1942 novel by Ellery Queen; The Calamity, a central plot point for the 2011 video game Bastion; Calamity, a mod for the 2011 video game Terraria "Calamity", a song by Zayn from his 2021 album Nobody Is Listening
Game Maker's Toolkit (GMTK) is a video game analysis video series created by British journalist Mark Brown. Beginning in 2014, the series examines video game design and aims to encourage developers to improve their craft. It is hosted on YouTube and funded via Patreon. Additional topics include game accessibility and level design.
a Phylogenetic tReE viSualisaTion. Taxonium [15] web-based tool for exploration of very large trees including those with millions of nodes, with search and metadata coloring. When provided with a mutation-annotated tree, it illustrates mutations on the tree and displays final genotypes. T-REX (Webserver) [16]
After Zelda and King Rhoam reconcile, Purah uses the Sheikah towers to transport their allies to Hyrule Castle for a full-scale assault against Calamity Ganon. Although the Divine Beasts weaken Ganon's spirit form, Astor arrives with Harbinger Ganon, the small Guardian from the current timeline that has been infected with the Malice from the ...