{"id":335,"date":"2023-05-29T18:49:29","date_gmt":"2023-05-29T17:49:29","guid":{"rendered":"https:\/\/clave53.org\/edita\/?post_type=product&#038;p=335"},"modified":"2023-05-29T18:50:08","modified_gmt":"2023-05-29T17:50:08","slug":"cianotipia-occidente","status":"publish","type":"product","link":"https:\/\/clave53.org\/edita\/product\/cianotipia-occidente\/","title":{"rendered":"Cianotipia: Occidente"},"content":{"rendered":"<p>Cianotipia del <a href=\"https:\/\/www.giusseppe.net\/proyectos\/palimpsestos.html\" target=\"_blank\" rel=\"noopener\">Proyecto Palimpsestos<\/a><\/p>\n<blockquote><p>Si realizar Palimpsestos digitales era ya de por s\u00ed bastante in\u00fatil, realizar cianotipia de ellos es acabar por llevar lo anal\u00f3gico a lo digital para volverlo anal\u00f3gico de nuevo. <strong>Es tan absurdo que no puedo evitar hacerlo<\/strong>.<\/p><\/blockquote>\n<p>Este cianotipo que puedes tener entre manos fue realizado en la primera quincena de julio de 2021 por Giusseppe Dom\u00ednguez, utilizando la t\u00e9cnica de cianotipia, sobre papel de acuarela de grano grueso de 300gsm. La cianotipia es un procedimiento fotogr\u00e1fico monocromo, que consigue escritura con luz (etimolog\u00eda de <i>foto-graf\u00eda<\/i>) en azul de Prusia.<\/p>\n<p>El azul de Prusia (<i>Preu\u00dfisch Blau o Berliner Blau &#8211; \u00abazul berlin\u00e9s\u00bb<\/i>) es una sustancia de color azul oscuro empleada como pigmento en pintura y que antiguamente era usada en los planos (<i>blueprints<\/i>). Fue descubierto por el qu\u00edmico Heinrich Diesbach en Berl\u00edn en 1704. Posee diversos nombres qu\u00edmicos (seg\u00fan la nomenclatura que se emplee): Ferrocianuro de hierro(III), Ferrocianuro f\u00e9rrico, Hexacianoferrato(II) de hierro(III) y Hexacianoferrato f\u00e9rrico. Su f\u00f3rmula qu\u00edmica abreviada es: Fe<sub>7<\/sub>C<sub>18<\/sub>N<sub>18 <\/sub><i>(y no es t\u00f3xico ;-)).<\/i><\/p>\n<p>Se obtiene mediante la reacci\u00f3n de dos compuestos (Citrato de amonio y hierro (III) y Ferricianuro pot\u00e1sico) que generan una soluci\u00f3n acuosa fotosensible con la que recubrir el papel. Una imagen positiva se produce exponi\u00e9ndola a una fuente de luz ultravioleta (como luz solar) con un negativo; que en este caso es el positivo que produce, por tanto, un negativo. La luz ultravioleta reduce el hierro (III) a hierro (II). A esto le sigue una reacci\u00f3n compleja del hierro (II) con el ferricianuro. El resultado es una sustancia insoluble al agua, de color azul (cian): Azul de Prusia.<\/p>\n<p>El astr\u00f3nomo ingl\u00e9s Sir John Herschel invent\u00f3 el m\u00e9todo de la fotograf\u00eda cianot\u00edpica en 1842, pero fue la bot\u00e1nica brit\u00e1nica Anna Atkins quien lo utiliz\u00f3 creando una serie de libros documentando helechos y otras plantas, cuyas ilustraciones eran copias azuladas o cianotipos. Por su serie British Algae, de 1843, Anna Atkins es considerada como la primera mujer fot\u00f3grafa.<\/p>\n<div id=\"sdfootnote1\">\n<p class=\"sdfootnote\">\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Cianotipia realizada sobre papel guarro de grano grueso de 300 gsm.<\/p>\n<p><em>(Versi\u00f3n con descuento\/precio rebajado sobre papel de acuarela de grano fino de 200 gsm)<\/em><\/p>\n","protected":false},"featured_media":336,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[29,30,41],"product_tag":[26,48,27,49],"class_list":["post-335","product","type-product","status-publish","has-post-thumbnail","product_cat-arte","product_cat-contemporaneo","product_cat-giusseppe","product_tag-arte","product_tag-cianotipia","product_tag-giusseppe-dominguez","product_tag-palimpsesto","desktop-align-left","tablet-align-left","mobile-align-left","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/product\/335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/comments?post=335"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/media\/336"}],"wp:attachment":[{"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/media?parent=335"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/product_brand?post=335"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/product_cat?post=335"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/clave53.org\/edita\/wp-json\/wp\/v2\/product_tag?post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}