In optics and especially laser science, the Rayleigh length or Rayleigh range, , is the distance along the propagation direction of a beam from the waist to the place where the area of the cross section is doubled. A related parameter is the confocal parameter, b, which is twice the Rayleigh length. The Rayleigh length is particularly important when beams are modeled as Gaussian beams.
{"type":"standard","title":"Miz Cracker","displaytitle":"Miz Cracker","namespace":{"id":0,"text":""},"wikibase_item":"Q55583740","titles":{"canonical":"Miz_Cracker","normalized":"Miz Cracker","display":"Miz Cracker"},"pageid":57408483,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/1/10/Rupaul_Dragcon_2018-132_%2841175946045%29_%28cropped2%29.jpg/330px-Rupaul_Dragcon_2018-132_%2841175946045%29_%28cropped2%29.jpg","width":320,"height":313},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/1/10/Rupaul_Dragcon_2018-132_%2841175946045%29_%28cropped2%29.jpg","width":613,"height":600},"lang":"en","dir":"ltr","revision":"1277612440","tid":"155646f2-f3a2-11ef-9529-a592a2322b64","timestamp":"2025-02-25T17:58:14Z","description":"American drag queen","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Miz_Cracker","revisions":"https://en.wikipedia.org/wiki/Miz_Cracker?action=history","edit":"https://en.wikipedia.org/wiki/Miz_Cracker?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Miz_Cracker"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Miz_Cracker","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Miz_Cracker","edit":"https://en.m.wikipedia.org/wiki/Miz_Cracker?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Miz_Cracker"}},"extract":"Miz Cracker is the stage name of Maxwell Elias Heller, an American drag queen and television personality. He is best known for placing fifth on the tenth season of RuPaul's Drag Race and for being a runner-up on the fifth season of RuPaul's Drag Race All Stars.","extract_html":"
Miz Cracker is the stage name of Maxwell Elias Heller, an American drag queen and television personality. He is best known for placing fifth on the tenth season of RuPaul's Drag Race and for being a runner-up on the fifth season of RuPaul's Drag Race All Stars.
"}{"slip": { "id": 41, "advice": "Don't use Excel or Powerpoint documents for your basic word processing needs."}}
{"slip": { "id": 147, "advice": "Don't take life too seriously."}}
{"fact":"Some cats have survived falls of over 65 feet (20 meters), due largely to their \u201crighting reflex.\u201d The eyes and balance organs in the inner ear tell it where it is in space so the cat can land on its feet. Even cats without a tail have this ability.","length":249}
{"fact":"Cat bites are more likely to become infected than dog bites.","length":60}
{"slip": { "id": 214, "advice": "Things are just things. Don't get too attached to them."}}
{"fact":"The ability of a cat to find its way home is called \u201cpsi-traveling.\u201d Experts think cats either use the angle of the sunlight to find their way or that cats have magnetized cells in their brains that act as compasses.","length":216}
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