{"id":18177,"date":"2023-03-15T14:32:27","date_gmt":"2023-03-15T14:32:27","guid":{"rendered":"https:\/\/www.ugomulas.org\/gallery\/verifiche\/luso-della-fotografia-copy-copy-copy\/"},"modified":"2026-10-14T09:16:25","modified_gmt":"2026-10-14T09:16:25","slug":"luso-della-fotografia-copy-copy-copy","status":"publish","type":"page","link":"https:\/\/www.ugomulas.org\/en\/gallery\/verifiche\/luso-della-fotografia-copy-copy-copy\/","title":{"rendered":"7. Il laboratorio"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\t\t\t7. Il laboratorio. \nUna mano sviluppa, l\u2019altra fissa – A Sir John Frederick William Herschel. 1970-1972\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t(\u201cEsperimento 1013. 29 gennaio 1939. Trovato l\u2019iposolfito di sodio per arrestare l\u2019azione della luce eliminando con lavaggio tutto il cloruro d\u2019argento. Riuscito perfettamente. Carta met\u00e0 esposta, e met\u00e0 protetta dalla luce grazie a copertura di cartone. Poi ritirata dalla luce e spruzzata con iposolfito di sodio e quindi lavata bene con acqua pura. Fatta asciugare, poi esposta di nuovo, la met\u00e0 oscurata rimane oscura, la met\u00e0 bianca rimane bianca dopo qualsiasi durata d\u2019esposizione\u201d.)\n\n\u00c8 la mia verifica del laboratorio, cio\u00e8 un\u2019operazione in cui la macchina fotografica \u00e8 esclusa e vengono messi in rilievo lo sviluppo e il fissaggio: un\u2019operazione che volevo priva di ogni emozione e di una estrema secchezza e chiarezza, quale si pu\u00f2 cogliere nell\u2019appunto scientifico lasciatoci da Herschel. \nNel laboratorio tutto si compie con le mani: prendere i fogli, metterli sotto l\u2019ingranditore, mettere a fuoco, alzare l\u2019ingranditore, abbassarlo, prendere il foglio, immergerlo nello sviluppo, lavarlo, riprenderlo, immergerlo nel fissaggio. Le mani sono dunque le protagoniste e sono anche l\u2019unico oggetto di questa coppia di fotografie: ne ho immersa una nello sviluppo, e una nel fissaggio. Dopo aver fatto prendere luce al foglio, sotto l\u2019ingranditore, le ho appoggiate e schiacciate sul foglio stesso in modo da dividerlo in due. La mano immersa nello sviluppo \u00e8 apparsa subito, l\u2019altra solo quando la met\u00e0 del foglio \u00e8 stata sviluppata.\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

7. Il laboratorio. Una mano sviluppa, l\u2019altra fissa – A Sir John Frederick William Herschel. 1970-1972 (\u201cEsperimento 1013. 29 gennaio 1939. Trovato l\u2019iposolfito di sodio per arrestare l\u2019azione della luce eliminando con lavaggio tutto il cloruro d\u2019argento. Riuscito perfettamente. Carta met\u00e0 esposta, e met\u00e0 protetta dalla luce grazie a copertura di cartone. Poi ritirata dalla […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":17969,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-18177","page","type-page","status-publish","hentry"],"yoast_head":"\n7. 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