The B Reactor at the Hanford Site, near Richland, Washington, was the first large-scale nuclear reactor ever built, at 250 MW. It achieved criticality on September 26, 1944. The project was a key part of the Manhattan Project, the United States nuclear weapons development program during World War II. Its purpose was to convert part of its natural uranium fuel into plutonium-239 by neutron activation, for use in nuclear weapons. Pure plutonium was then chemically separated in the site's T Plant, as an alternative to the Project's uranium enrichment plants. The B reactor was graphite moderated and water-cooled, via a contaminating open cycle with the Columbia River.
"}{"type":"standard","title":"Surface-mount technology","displaytitle":"Surface-mount technology","namespace":{"id":0,"text":""},"wikibase_item":"Q191042","titles":{"canonical":"Surface-mount_technology","normalized":"Surface-mount technology","display":"Surface-mount technology"},"pageid":232333,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Smt_closeup.jpg/330px-Smt_closeup.jpg","width":320,"height":250},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/6/6b/Smt_closeup.jpg","width":1024,"height":800},"lang":"en","dir":"ltr","revision":"1289428031","tid":"bbcf8af6-2c20-11f0-959e-1fd4a3497e94","timestamp":"2025-05-08T15:25:55Z","description":"Method for producing electronic circuits","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Surface-mount_technology","revisions":"https://en.wikipedia.org/wiki/Surface-mount_technology?action=history","edit":"https://en.wikipedia.org/wiki/Surface-mount_technology?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Surface-mount_technology"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Surface-mount_technology","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Surface-mount_technology","edit":"https://en.m.wikipedia.org/wiki/Surface-mount_technology?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Surface-mount_technology"}},"extract":"Surface-mount technology (SMT), originally called planar mounting, is a method in which the electrical components are mounted directly onto the surface of a printed circuit board (PCB). An electrical component mounted in this manner is referred to as a surface-mount device (SMD). In industry, this approach has largely replaced through-hole technology construction method of fitting components, in large part because SMT allows for increased manufacturing automation which reduces cost and improves quality. It also allows for more components to fit on a given area of substrate. Both technologies can be used on the same board, with the through-hole technology often used for components not suitable for surface mounting such as large transformers and heat-sinked power semiconductors.","extract_html":"
Surface-mount technology (SMT), originally called planar mounting, is a method in which the electrical components are mounted directly onto the surface of a printed circuit board (PCB). An electrical component mounted in this manner is referred to as a surface-mount device (SMD). In industry, this approach has largely replaced through-hole technology construction method of fitting components, in large part because SMT allows for increased manufacturing automation which reduces cost and improves quality. It also allows for more components to fit on a given area of substrate. Both technologies can be used on the same board, with the through-hole technology often used for components not suitable for surface mounting such as large transformers and heat-sinked power semiconductors.
"}{"fact":"The richest cat is Blackie who was left \u00a315 million by his owner, Ben Rea.","length":74}
{"slip": { "id": 148, "advice": "Some people would be better off if they took their own advice."}}
{"type":"standard","title":"Araeosoma","displaytitle":"Araeosoma","namespace":{"id":0,"text":""},"wikibase_item":"Q3461559","titles":{"canonical":"Araeosoma","normalized":"Araeosoma","display":"Araeosoma"},"pageid":47678062,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Araeosoma_thetidis_insitu.tif/lossy-page1-320px-Araeosoma_thetidis_insitu.tif.jpg","width":320,"height":204},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Araeosoma_thetidis_insitu.tif/lossy-page1-1851px-Araeosoma_thetidis_insitu.tif.jpg","width":1851,"height":1182},"lang":"en","dir":"ltr","revision":"1188236139","tid":"5c17dbb2-9255-11ee-9ba5-185ac3b20523","timestamp":"2023-12-04T03:29:41Z","description":"Genus of sea urchins","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Araeosoma","revisions":"https://en.wikipedia.org/wiki/Araeosoma?action=history","edit":"https://en.wikipedia.org/wiki/Araeosoma?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Araeosoma"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Araeosoma","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Araeosoma","edit":"https://en.m.wikipedia.org/wiki/Araeosoma?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Araeosoma"}},"extract":"Araeosoma is a genus of deep-sea sea urchins in the family Echinothuriidae.","extract_html":"
Araeosoma is a genus of deep-sea sea urchins in the family Echinothuriidae.
"}{"fact":"On average, a cat will sleep for 16 hours a day.","length":48}
{"slip": { "id": 145, "advice": "Always the burrito."}}
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