In thermodynamics, a critical point is the end point of a phase equilibrium curve. One example is the liquid–vapor critical point, the end point of the pressure–temperature curve that designates conditions under which a liquid and its vapor can coexist. At higher temperatures, the gas comes into a supercritical phase, and so cannot be liquefied by pressure alone. At the critical point, defined by a critical temperature Tc and a critical pressure pc, phase boundaries vanish. Other examples include the liquid–liquid critical points in mixtures, and the ferromagnet–paramagnet transition in the absence of an external magnetic field.
"}{"fact":"Blue-eyed, white cats are often prone to deafness.","length":50}
{"slip": { "id": 157, "advice": "When something goes wrong in life, just shout \"plot twist!\" and carry on."}}
{"type":"standard","title":"Catharine Macfarlane","displaytitle":"Catharine Macfarlane","namespace":{"id":0,"text":""},"wikibase_item":"Q21587142","titles":{"canonical":"Catharine_Macfarlane","normalized":"Catharine Macfarlane","display":"Catharine Macfarlane"},"pageid":48677408,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Catherine_Macfarlane_%281877-1969%29_%286891479991%29.jpg/330px-Catherine_Macfarlane_%281877-1969%29_%286891479991%29.jpg","width":320,"height":406},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/f/f5/Catherine_Macfarlane_%281877-1969%29_%286891479991%29.jpg","width":1577,"height":2000},"lang":"en","dir":"ltr","revision":"1280928563","tid":"977edcd9-0301-11f0-a0a8-f2df952103d4","timestamp":"2025-03-17T07:29:42Z","description":"American obstetrician and gynecologist","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Catharine_Macfarlane","revisions":"https://en.wikipedia.org/wiki/Catharine_Macfarlane?action=history","edit":"https://en.wikipedia.org/wiki/Catharine_Macfarlane?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Catharine_Macfarlane"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Catharine_Macfarlane","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Catharine_Macfarlane","edit":"https://en.m.wikipedia.org/wiki/Catharine_Macfarlane?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Catharine_Macfarlane"}},"extract":"Catharine Macfarlane (1877–1969) was an American obstetrician and gynecologist who founded one of the first screening centers for uterine cancer in the United States. She was the first woman fellow of the College of Physicians of Philadelphia, and the first woman president of the Obstetrical Society of Philadelphia.","extract_html":"
Catharine Macfarlane (1877–1969) was an American obstetrician and gynecologist who founded one of the first screening centers for uterine cancer in the United States. She was the first woman fellow of the College of Physicians of Philadelphia, and the first woman president of the Obstetrical Society of Philadelphia.
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