Vacuum tubes that generates millimeter-wave electromagnetic waves

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{"type":"standard","title":"Piove (Ciao, ciao bambina)","displaytitle":"Piove (Ciao, ciao bambina)","namespace":{"id":0,"text":""},"wikibase_item":"Q734836","titles":{"canonical":"Piove_(Ciao,_ciao_bambina)","normalized":"Piove (Ciao, ciao bambina)","display":"Piove (Ciao, ciao bambina)"},"pageid":6999982,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/en/d/d8/Domenico_Modugno-Piove_%28Ciao%2C_ciao_bambina%29.jpg","width":316,"height":315},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/en/d/d8/Domenico_Modugno-Piove_%28Ciao%2C_ciao_bambina%29.jpg","width":316,"height":315},"lang":"en","dir":"ltr","revision":"1280159531","tid":"724f1904-ff8e-11ef-bf9a-b19a400d9960","timestamp":"2025-03-12T22:07:54Z","description":"1959 song by both Domenico Modugno and Johnny Dorelli","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Piove_(Ciao%2C_ciao_bambina)","revisions":"https://en.wikipedia.org/wiki/Piove_(Ciao%2C_ciao_bambina)?action=history","edit":"https://en.wikipedia.org/wiki/Piove_(Ciao%2C_ciao_bambina)?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Piove_(Ciao%2C_ciao_bambina)"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Piove_(Ciao%2C_ciao_bambina)","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Piove_(Ciao%2C_ciao_bambina)","edit":"https://en.m.wikipedia.org/wiki/Piove_(Ciao%2C_ciao_bambina)?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Piove_(Ciao%2C_ciao_bambina)"}},"extract":"\"Piove \" is a song composed by Domenico Modugno with Italian lyrics by Eduardo Verde. It won first prize at the 1959 Sanremo Music Festival, where it was performed by both Modugno and Johnny Dorelli. Performed by Modugno, it represented Italy in the Eurovision Song Contest 1959 held in Cannes, placing sixth.","extract_html":"

\"Piove \" is a song composed by Domenico Modugno with Italian lyrics by Eduardo Verde. It won first prize at the 1959 Sanremo Music Festival, where it was performed by both Modugno and Johnny Dorelli. Performed by Modugno, it represented Italy in the Eurovision Song Contest 1959 held in Cannes, placing sixth.

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0.TO.10 was the tenth concert tour by South Korean boy band Big Bang that was held to celebrate the group's tenth anniversary. The tour visited Japan, South Korea and Hong Kong from July 2016 to January 2017. The shows were live-streamed through theatres in Japan, Tencent QQ in China and Naver's V app. BigBang held 24 concerts in six cities, which attracted more than 1.1 million fans.

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{"fact":"Cats lived with soldiers in trenches, where they killed mice during World War I.","length":80}

{"type":"standard","title":"CPIE Bocage de l'Avesnois","displaytitle":"CPIE Bocage de l'Avesnois","namespace":{"id":0,"text":""},"wikibase_item":"Q2931877","titles":{"canonical":"CPIE_Bocage_de_l'Avesnois","normalized":"CPIE Bocage de l'Avesnois","display":"CPIE Bocage de l'Avesnois"},"pageid":40363261,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/en/thumb/6/65/Logo_of_CPIE_Bocage_de_l%27Avesnois.png/330px-Logo_of_CPIE_Bocage_de_l%27Avesnois.png","width":320,"height":136},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/en/6/65/Logo_of_CPIE_Bocage_de_l%27Avesnois.png","width":484,"height":205},"lang":"en","dir":"ltr","revision":"1295391288","tid":"a7e9f5fa-4856-11f0-bb00-3ffddb54b8be","timestamp":"2025-06-13T13:02:27Z","description":"Organization","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/CPIE_Bocage_de_l'Avesnois","revisions":"https://en.wikipedia.org/wiki/CPIE_Bocage_de_l'Avesnois?action=history","edit":"https://en.wikipedia.org/wiki/CPIE_Bocage_de_l'Avesnois?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:CPIE_Bocage_de_l'Avesnois"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/CPIE_Bocage_de_l'Avesnois","revisions":"https://en.m.wikipedia.org/wiki/Special:History/CPIE_Bocage_de_l'Avesnois","edit":"https://en.m.wikipedia.org/wiki/CPIE_Bocage_de_l'Avesnois?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:CPIE_Bocage_de_l'Avesnois"}},"extract":"CPIE Bocage de l'Avesnois is an association in northern France created under the Loi de 1901. It is one of the 80 organizations known as Centre Permanent d'Initiatives pour l'Environnement (CPIE) in France. The association aims to contribute to the sustainable development of the Arrondissement of Avesnes-sur-Helpe; it does this through nature conservation, environmental education and supporting local agents to carry out sustainable development.","extract_html":"

CPIE Bocage de l'Avesnois is an association in northern France created under the Loi de 1901. It is one of the 80 organizations known as Centre Permanent d'Initiatives pour l'Environnement (CPIE) in France. The association aims to contribute to the sustainable development of the Arrondissement of Avesnes-sur-Helpe; it does this through nature conservation, environmental education and supporting local agents to carry out sustainable development.

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{"type":"standard","title":"Gyrotron","displaytitle":"Gyrotron","namespace":{"id":0,"text":""},"wikibase_item":"Q1254606","titles":{"canonical":"Gyrotron","normalized":"Gyrotron","display":"Gyrotron"},"pageid":1363288,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/W7-X_gyrotron.jpg/330px-W7-X_gyrotron.jpg","width":320,"height":480},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/8/85/W7-X_gyrotron.jpg","width":3600,"height":5400},"lang":"en","dir":"ltr","revision":"1289286874","tid":"c201328e-2b66-11f0-b16c-2be6a4454270","timestamp":"2025-05-07T17:14:39Z","description":"Vacuum tube which generates high-frequency radio waves","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Gyrotron","revisions":"https://en.wikipedia.org/wiki/Gyrotron?action=history","edit":"https://en.wikipedia.org/wiki/Gyrotron?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Gyrotron"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Gyrotron","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Gyrotron","edit":"https://en.m.wikipedia.org/wiki/Gyrotron?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Gyrotron"}},"extract":"A gyrotron is a class of high-power linear-beam vacuum tubes that generates millimeter-wave electromagnetic waves by the cyclotron resonance of electrons in a strong magnetic field. Output frequencies range from about 20 to 527 GHz, covering wavelengths from microwave to the edge of the terahertz gap. Typical output powers range from tens of kilowatts to 1–2 megawatts. Gyrotrons can be designed for pulsed or continuous operation. The gyrotron was invented by Soviet scientists at NIRFI, based in Nizhny Novgorod, Rus