{"id":171646,"date":"2026-09-05T15:41:07","date_gmt":"2026-09-05T15:41:07","guid":{"rendered":"https:\/\/iwell-guard.com\/?page_id=171646"},"modified":"2026-09-05T16:03:22","modified_gmt":"2026-09-05T16:03:22","slug":"eter","status":"publish","type":"page","link":"https:\/\/iwell-guard.com\/ca\/eter\/","title":{"rendered":"\u00c8ter"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"171646\" class=\"elementor elementor-171646 elementor-2454 elementor-bc-flex-widget\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-hero44b488a e-flex e-con-boxed e-con e-parent\" data-id=\"hero44b488a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-heroimga0b2f85 iwg-hero-image elementor-widget elementor-widget-image\" data-id=\"heroimga0b2f85\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/iwell-guard.com\/wp-content\/uploads\/2026\/05\/praktiken_aether-683x1024.webp\" class=\"attachment-large size-large wp-image-3395\" alt=\"\u00c8ter\" srcset=\"https:\/\/iwell-guard.com\/wp-content\/uploads\/2026\/05\/praktiken_aether-683x1024.webp 683w, https:\/\/iwell-guard.com\/wp-content\/uploads\/2026\/05\/praktiken_aether-200x300.webp 200w, https:\/\/iwell-guard.com\/wp-content\/uploads\/2026\/05\/praktiken_aether-768x1152.webp 768w, https:\/\/iwell-guard.com\/wp-content\/uploads\/2026\/05\/praktiken_aether.webp 1024w\" sizes=\"(max-width: 683px) 100vw, 683px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-sec-aether elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"sec-aether\" data-element_type=\"section\" data-e-type=\"section\" id=\"sec-aether\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-col-aether\" data-id=\"col-aether\" data-element_type=\"column\" data-e-type=\"column\" id=\"col-aether\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-wh-aether elementor-widget elementor-widget-heading\" data-id=\"wh-aether\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"h1-aether\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">\u00c8ter, medi subtil de suport de l'antiguitat i la primera modernitat<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-we-aether elementor-widget elementor-widget-text-editor\" data-id=\"we-aether\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"iwg-lead\"><strong>\u00c8ter<\/strong> designa, en la filosofia natural antiga, un medi subtil que omple els espais entre els elements densos i que s&#8217;ent\u00e9n com un pont entre l&#8217;\u00e0mbit material i l&#8217;\u00e0mbit espiritual de la realitat. El concepte tra\u00e7a una l\u00ednia des d&#8217;Arist\u00f2til, passant pels estoics i els neoplat\u00f2nics, fins a la primera modernitat, i acaba en l&#8217;<span class=\"iwg-fachbegriff\" data-tooltip=\"Terme gen\u00e8ric per a doctrines que reivindiquen un coneixement ocult, accessible nom\u00e9s als iniciats.\" tabindex=\"0\">esoterisme<\/span> modern.<\/p>\n<h2 id=\"aristoteles\">Arrels aristot\u00e8liques<\/h2>\n<p>Arist\u00f2til, a <em>De caelo<\/em> (Sobre el cel, segle IV a. C.), afegeix als quatre elements sublunars terra, aigua, aire i foc un cinqu\u00e8: l&#8217;\u00e8ter o la <em>quinta essentia<\/em>. Aquest no es mou en l\u00ednies rectes com els elements terrestres, sin\u00f3 circularment, i per aix\u00f2 \u00e9s la mat\u00e8ria primera de les esferes celestes, de les estrelles i dels planetes.<\/p><p>Aquesta doctrina configura la visi\u00f3 del m\u00f3n medieval fins a Cop\u00e8rnic i proporciona el vocabulari per a qualsevol discussi\u00f3 posterior sobre la relaci\u00f3 entre mat\u00e8ria i <span class=\"iwg-fachbegriff\" data-tooltip=\"Un \u00e9sser incorpori al qual s'atribueix acci\u00f3 en el m\u00f3n.\" tabindex=\"0\">esperit<\/span>.<\/p>\n<h2 id=\"stoa\">Estoics i neoplat\u00f2nics<\/h2>\n<p>L&#8217;esto\u00efcisme identifica l&#8217;\u00e8ter amb el pneuma, la m\u00e9s subtil i penetrant de totes les subst\u00e0ncies, que uneix el cosmos com a <em>sympatheia<\/em>.<\/p><p>El neoplatonisme radicalitza aquesta idea: Plot\u00ed i Procle entenen l&#8217;\u00e8ter com el medi llumin\u00f3s superior a trav\u00e9s del qual l&#8217;\u00e0nima ascendeix, en el seu cam\u00ed des del m\u00f3n material, de retorn a l&#8217;U. En I\u00e0mblic, l&#8217;\u00e8ter esdev\u00e9 l&#8217;espai de resson\u00e0ncia preferit de la pr\u00e0ctica te\u00fargica: els d\u00e9us no s&#8217;invoquen en la pedra, sin\u00f3 en el corrent eteri.<\/p>\n<h2 id=\"frueneuzeit\">F\u00edsica de la primera modernitat i cartesians<\/h2>\n<p>Ren\u00e9 Descartes adopta l&#8217;\u00e8ter com a portador de la seva res extensa dins la f\u00edsica dels v\u00f2rtexs. Newton es debat tota la vida amb la q\u00fcesti\u00f3 de si la llum es transmet mitjan\u00e7ant un medi eteri o pot existir sense cap subst\u00e0ncia portadora.<\/p><p>En els <em>Optics<\/em> de Newton, l&#8217;\u00e8ter apareix com a substrat hipot\u00e8tic de la propagaci\u00f3 de la llum, que tamb\u00e9 hauria de transmetre la gravitaci\u00f3. Fins al segle XIX, l&#8217;\u00e8ter llumin\u00f3s \u00e9s un component evident de la teoria cient\u00edfica.<\/p>\n<h2 id=\"michelson\">Hist\u00f2ria de la ci\u00e8ncia: Michelson-Morley i la fi de l&#8217;\u00e8ter<\/h2>\n<p>L&#8217;experiment d&#8217;Albert Michelson i Edward Morley (1887) volia mesurar el moviment de la Terra respecte a l&#8217;\u00e8ter llumin\u00f3s en rep\u00f2s, per\u00f2 no va trobar-hi cap efecte. Amb la teoria de la relativitat especial d&#8217;Einstein (1905), l&#8217;\u00e8ter esdev\u00e9 superflu com a hip\u00f2tesi f\u00edsica.<\/p><p>El terme desapareix de la f\u00edsica, per\u00f2 reapareix com a met\u00e0fora i en contextos esot\u00e8rics: en Tesla, en la teosofia, en l&#8217;antroposofia de Rudolf Steiner.<\/p>\n<h2 id=\"theosophie\">Teosofia i <span class=\"iwg-fachbegriff\" data-tooltip=\"Terme gen\u00e8ric per a doctrines que reivindiquen un coneixement ocult, accessible nom\u00e9s als iniciats.\" tabindex=\"0\">esoterisme<\/span> modern<\/h2>\n<p>Helena Blavatsky, a <em>La doctrina secreta<\/em>, anomena l&#8217;\u00e8ter <em>Akasha<\/em>, el medi de suport omnipenetrant i no material de tota mem\u00f2ria i de tots els rastres de consci\u00e8ncia. Aquesta lectura uneix la <em>quinta essentia<\/em> de l&#8217;<span class=\"iwg-fachbegriff\" data-tooltip=\"\u00c8poca de la cultura grega i romana, aproximadament del 800 a. C. al 600 d. C.\" tabindex=\"0\">antiguitat<\/span> amb el terme s\u00e0nscrit hinduista.<\/p><p>Steiner adopta el concepte i desenvolupa una doctrina diferenciada dels cossos eteris (\u00e8ter vital, \u00e8ter sonor, \u00e8ter llumin\u00f3s, \u00e8ter cal\u00f2ric), encara aplicada avui en la medicina i la pedagogia antropos\u00f2fiques.<\/p>\n<h2 id=\"einordnung\">Classificaci\u00f3 des de la ci\u00e8ncia de les religions<\/h2>\n<p>L&#8217;\u00e8ter \u00e9s exemplar per a l&#8217;espai sem\u00e0ntic de transici\u00f3 entre la filosofia natural antiga, la <span class=\"iwg-fachbegriff\" data-tooltip=\"Concepci\u00f3 de l'estructura i l'ordre del m\u00f3n dins d'una cultura.\" tabindex=\"0\">cosmologia<\/span> premoderna i l&#8217;<span class=\"iwg-fachbegriff\" data-tooltip=\"Terme gen\u00e8ric per a doctrines que reivindiquen un coneixement ocult, accessible nom\u00e9s als iniciats.\" tabindex=\"0\">esoterisme<\/span> modern. La recerca en ci\u00e8ncia de les religions (Wouter Hanegraaff, <em>Esotericism and the Academy<\/em>, 2012) llegeix termes com \u00e8ter, pneuma i akasha com a conceptes bessons d&#8217;una <em>traditio<\/em> occidental que es reescriu cont\u00ednuament des de l&#8217;<span class=\"iwg-fachbegriff\" data-tooltip=\"\u00c8poca de la cultura grega i romana, aproximadament del 800 a. C. al 600 d. C.\" tabindex=\"0\">antiguitat<\/span>.<\/p><p>Comprendre l&#8217;\u00e8ter \u00e9s, per tant, imprescindible per situar el llenguatge dels sistemes moderns de protecci\u00f3 i sanaci\u00f3, tamb\u00e9 el de l&#8217;iWell Guard, que opera amb el concepte de camps de protecci\u00f3 subtils.<\/p>\t\t\t\t\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<div class=\"elementor-element elementor-element-iwgcd-aether-sec e-flex e-con-boxed e-con e-parent\" data-id=\"iwgcd-aether-sec\" data-element_type=\"container\" data-e-type=\"container\" id=\"iwg-cd-aether\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-iwgcd-aether-inner e-flex e-con-boxed e-con e-parent\" data-id=\"iwgcd-aether-inner\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-iwgcd-aether-h elementor-widget elementor-widget-heading\" data-id=\"iwgcd-aether-h\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Connexi\u00f3 amb l'iWell Guard<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-iwgcd-aether-t elementor-widget elementor-widget-text-editor\" data-id=\"iwgcd-aether-t\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>En l&#8217;enteniment d&#8217;iWell Guard, l&#8217;\u00e8ter \u00e9s l&#8217;element omnipresent de l&#8217;energia creadora en el qual els m\u00f2duls d&#8217;afirmaci\u00f3 despleguen la seva direcci\u00f3 d&#8217;efecte.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-iwgcd-aether-b iwg-cd-button iwg-cd-cta-2026-05-13 elementor-widget elementor-widget-jet-button\" data-id=\"iwgcd-aether-b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"jet-button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-jet-button jet-elements\"><div class=\"jet-button__container\"><a class=\"jet-button__instance jet-button__instance--icon-left hover-effect-1\" href=\"\/ueber-iwell-guard\/?utm_source=iwell-guard.com&amp;utm_medium=info-box&amp;utm_campaign=lichtwesen-kosmologie\"><div class=\"jet-button__plane jet-button__plane-normal\"><\/div><div class=\"jet-button__plane jet-button__plane-hover\"><\/div><div class=\"jet-button__state jet-button__state-normal\"><span class=\"jet-button__label\">Estructura i funcionament<\/span><\/div><div class=\"jet-button__state jet-button__state-hover\"><span class=\"jet-button__label\">Estructura i funcionament<\/span><\/div><\/a><\/div><\/div><style>.elementor-element.elementor-element-iwgcd-aether-b .jet-button__instance{width:320px;height:56px;}.elementor-element.elementor-element-iwgcd-aether-b .jet-button__state-normal .jet-button__label{text-align:center;margin:0px 0px 0px 0px;color:#1a1b20;font-family:Montserrat,sans-serif;font-size:13px;font-weight:400;letter-spacing:4px;line-height:1.714em;text-transform:uppercase;}.elementor-element.elementor-element-iwgcd-aether-b .jet-button__state-hover .jet-button__label{text-align:center;margin:0px 0px 0px 0px;color:#FECC76;font-family:Montserrat,sans-serif;font-size:13px;font-weight:400;letter-spacing:4px;line-height:1.714em;text-transform:uppercase;}.elementor-element.elementor-element-iwgcd-aether-b .jet-button__plane-normal{background-color:#FECC76;border-style:solid;border-color:#C99540;border-width:2px 2px 2px 2px;}.elementor-element.elementor-element-iwgcd-aether-b .jet-button__plane-hover{background-color:rgba(0,0,0,0.55);border-style:solid;border-color:#FECC76;border-width:2px 2px 2px 2px;}<\/style>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-iwgcd-aether-d elementor-widget elementor-widget-text-editor\" data-id=\"iwgcd-aether-d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div data-nosnippet=\"true\"><p style=\"text-align:center;font-size:13px;opacity:0.7;margin-top:14px\" data-nosnippet=\"true\">Les direccions d&#8217;efecte es descriuen exclusivament de manera funcional. No \u00e9s un producte sanitari. No hi ha promesa de curaci\u00f3.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cp56c2c6d e-flex e-con-boxed e-con e-parent\" data-id=\"cp56c2c6d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cp7120c07 elementor-widget elementor-widget-heading\" data-id=\"cp7120c07\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">L'\u00e8ter en la cosmogonia antiga<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cpd2d3a38 e-con-full e-flex e-con e-child\" data-id=\"cpd2d3a38\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cp62342f9 elementor-widget elementor-widget-text-editor\" data-id=\"cp62342f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>L&#8217;\u00c8ter \u00e9s, en la <span class=\"iwg-fachbegriff\" data-tooltip=\"La transmissi\u00f3 de coneixements i relats al llarg de generacions.\" tabindex=\"0\">tradici\u00f3<\/span> grega i romana, menys una <span class=\"iwg-fachbegriff\" data-tooltip=\"Un \u00e9sser venerat com a div\u00ed dins d'una religi\u00f3.\" tabindex=\"0\">divinitat<\/span> activa amb mites que una donada primig\u00e8nia personificada del m\u00f3n. En Hes\u00edode, a la <em>Teogonia<\/em>, \u00c8ter figura entre els primers \u00e9ssers que sorgeixen a l&#8217;origen del m\u00f3n.<\/p><p>All\u00ed \u00e9s fill de Nix, la Nit, i d&#8217;\u00c8reb, la Foscor, i el seu germ\u00e0 \u00e9s H\u00e8mera, el Dia. Aix\u00ed, de la foscor sorgeix la llum.<\/p><p>\u00c8ter no designa l&#8217;aire que respirem, sin\u00f3 la capa superior, pura i lluminosa del cel, l&#8217;al\u00e7ada radiant on habiten els d\u00e9us i a trav\u00e9s de la qual brilla la llum del dia.<\/p><p>La capa inferior i boirosa de l&#8217;aire proper a la terra els grecs l&#8217;anomenaven <em>aer<\/em>. Aquesta distinci\u00f3 entre l&#8217;\u00c8ter pur de dalt i l&#8217;aire t\u00e8rbol de baix travessa tot l&#8217;univers de creences de l&#8217;<span class=\"iwg-fachbegriff\" data-tooltip=\"\u00c8poca de la cultura grega i romana, aproximadament del 800 a.C. al 600 d.C.\" tabindex=\"0\">antiguitat<\/span>.<\/p><p>Com a figura cosmog\u00f2nica, \u00c8ter no t\u00e9 un relat propi, ni un <span class=\"iwg-fachbegriff\" data-tooltip=\"El conjunt d'actes de veneraci\u00f3 religiosa cap a una divinitat o figura sagrada.\" tabindex=\"0\">culte<\/span> rellevant, ni gaireb\u00e9 <span class=\"iwg-fachbegriff\" data-tooltip=\"L'estudi dels continguts de les imatges i el seu significat.\" tabindex=\"0\">iconografia<\/span>. \u00c9s un element de la doctrina sobre l&#8217;origen del m\u00f3n, una pe\u00e7a en l&#8217;intent dels primers poetes de fer sorgir el m\u00f3n d&#8217;una seq\u00fc\u00e8ncia ordenada de forces primig\u00e8nies.<\/p><p>Les cosmogonies \u00f2rfiques, un conjunt de doctrines alternatives sobre la creaci\u00f3, atorguen de vegades a \u00c8ter un paper m\u00e9s destacat, fent que d&#8217;ell i del Caos sorgeixi l&#8217;Ou del M\u00f3n. Per a una comprensi\u00f3 cient\u00edfica, cal retenir que \u00c8ter \u00e9s sobretot un concepte de l&#8217;especulaci\u00f3 teol\u00f2gica i filos\u00f2fica, i no una <span class=\"iwg-fachbegriff\" data-tooltip=\"Un \u00e9sser venerat com a div\u00ed dins d'una religi\u00f3.\" tabindex=\"0\">divinitat<\/span> de la religi\u00f3 viscuda.<\/p>\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cp07fe2dc e-flex e-con-boxed e-con e-parent\" data-id=\"cp07fe2dc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cpdc66cdc elementor-widget elementor-widget-heading\" data-id=\"cpdc66cdc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Del concepte de divinitat a l'element de la filosofia natural<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cp5e4e309 e-con-full e-flex e-con e-child\" data-id=\"cp5e4e309\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cpb09dd19 elementor-widget elementor-widget-text-editor\" data-id=\"cpb09dd19\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La veritable hist\u00f2ria del significat de l&#8217;\u00c8ter no rau en el <span class=\"iwg-fachbegriff\" data-tooltip=\"Un relat transm\u00e8s sobre d\u00e9us, or\u00edgens i l'ordre del m\u00f3n.\" tabindex=\"0\">mite<\/span> ni en el <span class=\"iwg-fachbegriff\" data-tooltip=\"El conjunt d'actes de veneraci\u00f3 religiosa cap a una divinitat o figura sagrada.\" tabindex=\"0\">culte<\/span>, sin\u00f3 en la filosofia. Aqu\u00ed, la capa lluminosa del cel es va convertir en un concepte fonamental de la filosofia natural. Arist\u00f2til va fer el pas decisiu.<\/p><p>En la seva doctrina dels elements, distingeix els quatre elements terrestres (terra, aigua, aire i foc) d&#8217;un cinqu\u00e8, l&#8217;\u00c8ter, del qual estan fets els cossos celestes i les esferes celestials.<\/p><p>Aquest \u00c8ter aristot\u00e8lic t\u00e9 propietats particulars. \u00c9s imperible, immutable i es mou eternament en cercle, a difer\u00e8ncia dels quatre elements terrestres, que es mouen en l\u00ednia recta cap amunt o cap avall i estan sotmesos al canvi.<\/p><p>Amb l&#8217;\u00c8ter, Arist\u00f2til explicava per qu\u00e8 el cel \u00e9s de naturalesa diferent del m\u00f3n sota la Lluna: etern, regular i perfecte. D&#8217;aquesta cinquena subst\u00e0ncia deriva tamb\u00e9 el concepte posterior de quinta ess\u00e8ncia, el cinqu\u00e8 \u00e9sser.<\/p><p>Aquesta doctrina va marcar la visi\u00f3 del m\u00f3n europea durant gaireb\u00e9 dos mil\u00b7lennis. Va ser adoptada per la filosofia natural medieval i va formar part integral del cosmos d&#8217;inspiraci\u00f3 aristot\u00e8lica. Fins i tot despr\u00e9s que aquesta visi\u00f3 del m\u00f3n es desf\u00e9s a l&#8217;inici de l&#8217;edat moderna, la paraula \u00c8ter va romandre present en les ci\u00e8ncies naturals.<\/p><p>En la f\u00edsica dels segles XVII al XIX, el concepte d&#8217;<em>\u00e8ter llumin\u00f3s<\/em> es va utilitzar com el medi suposat en el qual es propagava la llum; nom\u00e9s la f\u00edsica de principis del segle XX va abandonar aquesta idea.<\/p><p>La hist\u00f2ria de l&#8217;\u00c8ter mostra aix\u00ed de manera v\u00edvida com un concepte origin\u00e0riament m\u00edtic i religi\u00f3s va poder passar, a trav\u00e9s de la filosofia, a la ci\u00e8ncia, i romandre-hi vigent durant molt temps.<\/p>\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\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":3395,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_yoast_wpseo_focuskw":"\u00c8ter medi subtil de suport","_yoast_wpseo_title":"\u00c8ter \u2013 medi subtil de suport | iWell Guard","_yoast_wpseo_metadesc":"L'\u00e8ter \u00e9s el cinqu\u00e8 element de l'antiguitat: Arist\u00f2til, els estoics, els neoplat\u00f2nics, la f\u00edsica de la primera modernitat i la teosofia moderna.","_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_canonical":"","_angie_page":false,"gefaehrdungsstufe":"","wesen_kultur":"","wesen_klasse":"","footnotes":""},"categories":[],"class_list":["post-171646","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u00c8ter \u2013 medi subtil de suport | iWell Guard<\/title>\n<meta name=\"description\" content=\"L&#039;\u00e8ter \u00e9s el cinqu\u00e8 element de l&#039;antiguitat: Arist\u00f2til, els estoics, els neoplat\u00f2nics, la f\u00edsica de la primera modernitat i la teosofia moderna.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/iwell-guard.com\/ca\/eter\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c8ter\" \/>\n<meta property=\"og:description\" content=\"L&#039;\u00e8ter \u00e9s el cinqu\u00e8 element de l&#039;antiguitat: Arist\u00f2til, els estoics, els neoplat\u00f2nics, la f\u00edsica de la primera modernitat i la teosofia moderna.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/iwell-guard.com\/ca\/eter\/\" \/>\n<meta property=\"og:site_name\" content=\"iWell Guard\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-05T16:03:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/iwell-guard.com\/wp-content\/uploads\/2026\/05\/praktiken_aether.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1536\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/eter\\\/\",\"url\":\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/eter\\\/\",\"name\":\"\u00c8ter \u2013 medi subtil de suport | iWell Guard\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/eter\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/eter\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/iwell-guard.com\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/praktiken_aether.webp\",\"datePublished\":\"2026-09-05T15:41:07+00:00\",\"dateModified\":\"2026-09-05T16:03:22+00:00\",\"description\":\"L'\u00e8ter \u00e9s el cinqu\u00e8 element de l'antiguitat: Arist\u00f2til, els estoics, els neoplat\u00f2nics, la f\u00edsica de la primera modernitat i la teosofia moderna.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/eter\\\/#breadcrumb\"},\"inLanguage\":\"ca\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/eter\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ca\",\"@id\":\"https:\\\/\\\/iwell-guard.com\\\/ca\\\/eter\\\/#primaryimage\",\"url\":\"https:\\\/\\\/iwell-guard.com\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/praktiken_aether.webp\",\"contentUrl\":\"https:\\\/\\\/iwell-guard.com\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/praktiken_aether.webp\",\"width\":1024,\"height\":1536,\"caption\":\"Pr\u00e0ctica. 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