In astronomy, photometry, from Greek photo- (\"light\") and -metry (\"measure\"), is a technique used in astronomy that is concerned with measuring the flux or intensity of light radiated by astronomical objects. This light is measured through a telescope using a photometer, often made using electronic devices such as a CCD photometer or a photoelectric photometer that converts light into an electric current by the photoelectric effect. When calibrated against standard stars of known intensity and colour, photometers can measure the brightness or apparent magnitude of celestial objects.
"}{"slip": { "id": 110, "advice": "Give up your seat for someone who needs it."}}
{"type":"standard","title":"Jabonga","displaytitle":"Jabonga","namespace":{"id":0,"text":""},"wikibase_item":"Q627461","titles":{"canonical":"Jabonga","normalized":"Jabonga","display":"Jabonga"},"pageid":2049411,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Flag_of_Jabonga%2C_Agusan_del_Norte.png/330px-Flag_of_Jabonga%2C_Agusan_del_Norte.png","width":320,"height":160},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/b/b5/Flag_of_Jabonga%2C_Agusan_del_Norte.png","width":1200,"height":600},"lang":"en","dir":"ltr","revision":"1261628882","tid":"da96dad3-b440-11ef-88b4-7d0ee2b34327","timestamp":"2024-12-07T02:13:31Z","description":"Municipality in Agusan del Norte, Philippines","description_source":"local","coordinates":{"lat":9.34306,"lon":125.51556},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Jabonga","revisions":"https://en.wikipedia.org/wiki/Jabonga?action=history","edit":"https://en.wikipedia.org/wiki/Jabonga?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Jabonga"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Jabonga","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Jabonga","edit":"https://en.m.wikipedia.org/wiki/Jabonga?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Jabonga"}},"extract":"Jabonga, officially the Municipality of Jabonga, is a municipality in the province of Agusan del Norte, Philippines. According to the 2020 census, it has a population of 24,855 people.","extract_html":"
Jabonga, officially the Municipality of Jabonga, is a municipality in the province of Agusan del Norte, Philippines. According to the 2020 census, it has a population of 24,855 people.
"}{"fact":"When a cat drinks, its tongue - which has tiny barbs on it - scoops the liquid up backwards.","length":92}
{"fact":"Cats have about 130,000 hairs per square inch (20,155 hairs per square centimeter).","length":83}
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{"type":"standard","title":"Szyk","displaytitle":"Szyk","namespace":{"id":0,"text":""},"wikibase_item":"Q9352585","titles":{"canonical":"Szyk","normalized":"Szyk","display":"Szyk"},"pageid":19018393,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Ko%C5%9Bci%C3%B3%C5%82_w_Szyku_BW_46.jpg/330px-Ko%C5%9Bci%C3%B3%C5%82_w_Szyku_BW_46.jpg","width":320,"height":240},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/9/9d/Ko%C5%9Bci%C3%B3%C5%82_w_Szyku_BW_46.jpg","width":2288,"height":1716},"lang":"en","dir":"ltr","revision":"1275923472","tid":"d4fb0773-ebe6-11ef-aa6b-3a437f9c0652","timestamp":"2025-02-15T21:50:12Z","description":"Village in Lesser Poland Voivodeship, Poland","description_source":"local","coordinates":{"lat":49.8,"lon":20.31666667},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Szyk","revisions":"https://en.wikipedia.org/wiki/Szyk?action=history","edit":"https://en.wikipedia.org/wiki/Szyk?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Szyk"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Szyk","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Szyk","edit":"https://en.m.wikipedia.org/wiki/Szyk?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Szyk"}},"extract":"Szyk is a village in the administrative district of Gmina Jodłownik, within Limanowa County, Lesser Poland Voivodeship, in southern Poland. It lies approximately 7 kilometres (4 mi) no