A copper vapor laser (CVL) uses vapors of copper as the lasing medium in a 4-level laser. It produces green laser light at 510.6 nm and yellow laser light at 578.2 nm. The pulse width is typically from 5 to 60 ns, and peak power from 50 to 5000 kW. Its pulse repetition frequencies can be 2 to 100 kHz. The average power of CVLs can range from 25 W to more than 2 kW.
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{"fact":"Cats' hearing is much more sensitive than humans and dogs.","length":58}
{"type":"standard","title":"2019–20 Kosovar Cup","displaytitle":"2019–20 Kosovar Cup","namespace":{"id":0,"text":""},"wikibase_item":"Q78704841","titles":{"canonical":"2019–20_Kosovar_Cup","normalized":"2019–20 Kosovar Cup","display":"2019–20 Kosovar Cup"},"pageid":62493954,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/en/thumb/6/68/Kosovar_Cup_logo_for_2019-20_Season.svg/320px-Kosovar_Cup_logo_for_2019-20_Season.svg.png","width":320,"height":320},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/en/thumb/6/68/Kosovar_Cup_logo_for_2019-20_Season.svg/300px-Kosovar_Cup_logo_for_2019-20_Season.svg.png","width":300,"height":300},"lang":"en","dir":"ltr","revision":"1282422269","tid":"140b56df-0a20-11f0-8fe1-751f55d2bfb3","timestamp":"2025-03-26T08:55:34Z","description":"Football tournament season","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/2019%E2%80%9320_Kosovar_Cup","revisions":"https://en.wikipedia.org/wiki/2019%E2%80%9320_Kosovar_Cup?action=history","edit":"https://en.wikipedia.org/wiki/2019%E2%80%9320_Kosovar_Cup?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:2019%E2%80%9320_Kosovar_Cup"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/2019%E2%80%9320_Kosovar_Cup","revisions":"https://en.m.wikipedia.org/wiki/Special:History/2019%E2%80%9320_Kosovar_Cup","edit":"https://en.m.wikipedia.org/wiki/2019%E2%80%9320_Kosovar_Cup?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:2019%E2%80%9320_Kosovar_Cup"}},"extract":"The 2019–20 Kosovar Cup is the football knockout competition of Kosovo in the 2019–20 season.","extract_html":"
The 2019–20 Kosovar Cup is the football knockout competition of Kosovo in the 2019–20 season.
"}{"fact":"The most popular pedigreed cat is the Persian cat, followed by the Main Coon cat and the Siamese cat.","length":101}
{"slip": { "id": 19, "advice": "If you cannot unscrew the lid of a jar, try placing a rubber band around its circumference for extra grip."}}
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