!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).version={})}(this,(function(exports){"use strict";var extendStatics=function(e,t){return extendStatics=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])},extendStatics(e,t)};function __extends(e,t){if("function"!=typeof t&&null!==t)throw new TypeError("Class extends value "+String(t)+" is not a constructor or null");function n(){this.constructor=e}extendStatics(e,t),e.prototype=null===t?Object.create(t):(n.prototype=t.prototype,new n)}var __assign=function(){return __assign=Object.assign||function(e){for(var t,n=1,i=arguments.length;n0&&o[o.length-1])||6!==s[0]&&2!==s[0])){a=0;continue}if(3===s[0]&&(!o||s[1]>o[0]&&s[1]0?(t(i-=1),setTimeout(o,1e3)):n()};o()}))},decode=function(){return JSON.parse(atob(window.park||""))},PAGE_STYLES="@import url(https://fonts.googleapis.com/css?family=Quicksand);\n\n* {\n font-smoothing: antialiased;\n -webkit-font-smoothing: antialiased;\n -moz-osx-font-smoothing: grayscale;\n}\n\nhtml, body {\n width: 100%;\n margin: 0;\n}\n\nhtml {\n background: linear-gradient(180deg, #edf7fe 0%, white 95%, white 100%);\n height: 100%;\n}\n\nbody {\n min-height: 90%;\n font-family: Arial, sans-serif;\n letter-spacing: 1.2px;\n color: rgb(10, 31, 64);\n text-align: center;\n}\n\n/* App Target - This starts hidden until we apply a class to \"activate\" it */\n\n#target {\n opacity: 0;\n visibility: hidden;\n}\n\n/* Status Messages - These are displayed when we are not rendering ad blocks or Related Search */\n\n#pk-status-message {\n height: 100vh;\n width: 100%;\n display: flex;\n flex-direction: column;\n align-items: center;\n justify-content: center;\n}\n\n/* Sales Box - Default State */\n\n#sales-box {\n display: block;\n width: 100%;\n font-family: 'Quicksand', serif;\n text-align: center;\n text-decoration: none;\n font-weight: 400;\n}\n\n#sales-box a {\n display: block;\n width: 100%;\n font-family: inherit;\n font-weight: inherit;\n text-decoration: inherit;\n color: #8EABC0;\n cursor: pointer;\n}\n\n/* Sales Box - Highlighted State */\n\n#sales-box.is-highlighted {\n position: relative;\n z-index: 1;\n background: #032438 linear-gradient(to top, #044368 0%, #000 100%);\n box-shadow: 0 0 15px 0 #000;\n border-bottom: 3px solid #262626;\n}\n\n#sales-box.is-highlighted a {\n line-height: 1.3;\n display: inline-block;\n font-size: 18px;\n color: #fff;\n text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.5);\n background: none;\n}\n\n/* Ellipsis Loader */\n\n.pk-loader {\n display: inline-block;\n position: relative;\n width: 80px;\n height: 80px;\n}\n\n.pk-loader div {\n position: absolute;\n top: 33px;\n width: 13px;\n height: 13px;\n border-radius: 50%;\n background: #4BA8D5;\n animation-timing-function: cubic-bezier(0, 1, 1, 0);\n}\n\n.pk-loader div:nth-child(1) {\n left: 8px;\n animation: pk-anim-1 0.6s infinite;\n}\n\n.pk-loader div:nth-child(2) {\n left: 8px;\n animation: pk-anim-2 0.6s infinite;\n}\n\n.pk-loader div:nth-child(3) {\n left: 32px;\n animation: pk-anim-2 0.6s infinite;\n}\n\n.pk-loader div:nth-child(4) {\n left: 56px;\n animation: pk-anim-1 0.6s infinite;\n animation-direction: reverse;\n}\n\n.pk-loader-text {\n position: fixed;\n font-size: 12px;\n right: 20px;\n bottom: 20px;\n font-weight: lighter;\n}\n\n/* Utilities */\n\n.pk-message-title {\n font-size: 2em;\n font-weight: bold;\n}\n\n.pk-page-ready {\n opacity: 1 !important;\n visibility: visible !important;\n}\n\n@media only screen and (max-width: 600px) {\n .hidden-xs {\n opacity: 0;\n visibility: hidden;\n }\n}\n\n/* Animation */\n\n@keyframes pk-anim-1 {\n 0% {\n transform: scale(0);\n }\n 100% {\n transform: scale(1);\n }\n}\n\n@keyframes pk-anim-2 {\n 0% {\n transform: translate(0, 0);\n }\n 100% {\n transform: translate(24px, 0);\n }\n}\n",APP_TARGET="#target",MESSAGE_SELECTOR="#pk-status-message",PAGE_READY_CLASS="pk-page-ready",MESSAGE_TEMPLATE='',Renderer=function(){function Renderer(e){var t=this;this._domIsReady=!1,this.revealPage=function(){t.domNode&&t.domNode.classList.add(PAGE_READY_CLASS)},this.injectMetaDescription=function(e){if(e&&0!==e.length){window.document.title=e;var t=document.createElement("meta");t.setAttribute("name","description"),t.setAttribute("content","See relevant content for ".concat(e)),document.getElementsByTagName("head")[0].appendChild(t)}},this.domNode=document.querySelector(e)}return Object.defineProperty(Renderer.prototype,"domIsReady",{get:function(){return this._domIsReady},set:function(e){this._domIsReady=e,e&&this.injectStyles(PAGE_STYLES)},enumerable:!1,configurable:!0}),Renderer.prototype.message=function(e,t){if(void 0===t&&(t=""),this.injectHTML(MESSAGE_TEMPLATE),this.domNode){var n=this.domNode.querySelector(MESSAGE_SELECTOR);n&&(n.innerHTML=e)}t&&this.injectMetaDescription(t)},Renderer.prototype.salesBanner=function(e){if(e){var t=e.href,n=e.position,i=e.message,o=e.theme,r=document.createElement("div"),a=n||"",s="HIGHLIGHT"===o?"is-highlighted":"";r.innerHTML=t?'\n \n "):'\n ').concat(i,"
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\n "))},Renderer.prototype.adBlockMessage=function(){this.message("\n Ad block detected
\n Please disable your ad blocker and reload the page.\n ")},Renderer.prototype.errorParkingUnavailable=function(){this.message("\n An Error Occurred
\n Parking is currently unavailable. We'll be right back.
\n ")},Renderer.prototype.errorParkingServicesDisabled=function(){this.message("\n An Error Occurred
\n Services for this domain name have been disabled.
\n ")},Renderer.prototype.errorParkingNoSponsors=function(e){this.message('\n \n No sponsors\n
\n \n '.concat(window.location.hostname," currently does not have any sponsors for you.\n \n "),e)},Renderer.prototype.imprint=function(e){if(e){var t=document.querySelector("#imprint-text");t&&(t.innerHTML=e.replace(/(?:\r\n|\r|\n)/g,"
"))}},Renderer.prototype.injectStyles=function(e){if(e){var t=document.createElement("style");t.innerHTML=e.toString(),document.head.appendChild(t)}},Renderer.prototype.injectScript=function(e){if(e){var t=document.createElement("script");t.type="text/javascript",t.src=e,document.body.appendChild(t)}},Renderer.prototype.injectJS=function(js){js&&0!==js.length&&eval(js)},Renderer.prototype.injectHTML=function(e){this.domNode?(e&&(this.domNode.innerHTML=e),this.domIsReady=!0):(this.domIsReady=!1,console.error("An error occurred when trying to render this page. DOM node not found."))},Renderer.prototype.prerender=function(e){this.injectMetaDescription(e.domain),this.injectHTML(e.html)},Renderer.prototype.template=function(e){var t,n=this;this.domIsReady||this.prerender(e),this.injectStyles(e.stylesheet),this.imprint(e.imprint),this.salesBanner(e.salesBanner),this.injectJS(e.javascript),null===(t=e.scripts)||void 0===t||t.forEach((function(e){n.injectScript(e)}))},Renderer}(),Render=new Renderer(APP_TARGET),Type;!function(e){e[e.Failed=0]="Failed",e[e.Disabled=1]="Disabled",e[e.Redirect=2]="Redirect",e[e.Parking=3]="Parking",e[e.Sales=4]="Sales"}(Type||(Type={}));var State$2=function(){function e(){}return Object.defineProperty(e.prototype,"trackingType",{get:function(){return this._trackingType},set:function(e){this._trackingType=e},enumerable:!1,configurable:!0}),Object.defineProperty(e.prototype,"track",{get:function(){return!!this.trackingType},enumerable:!1,configurable:!0}),e}(),Disabled=function(e){function t(){var t=null!==e&&e.apply(this,arguments)||this;return t.type=Type.Disabled,t}return __extends(t,e),t.build=function(e,n){var i;switch(n===Blocking.BLOCKED&&(i="adblocker"),e.cannotPark){case"disabled_mr":case"disabled_rc":i=e.cannotPark}if(i){var o=new t;return o.reason=i,o.domain=e.domainName,o}},Object.defineProperty(t.prototype,"message",{get:function(){switch(this.reason){case"adblocker":return"Ad block detected
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\n ".concat(this.domain," currently does not have any sponsors for you.
");case"disabled_mr":return"\n Invalid URL
\n Referral traffic for ".concat(this.domain," does not meet requirements.
");case"js_error":return"\n An Error Occurred
\n Parking is currently unavailable. We'll be right back.
\n ";default:return"\n An Error Occurred
\n Services for this domain name have been disabled.
\n "}},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"trackingType",{get:function(){switch(this.reason){case"disabled_rc":return"revenue_cap_reached";case"disabled_mr":return"invalid_referral";case"adblock":return"ad_blocked_message";case"no_sponsors":return"no_sponsors_message"}},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"domain",{get:function(){return window.location.hostname},enumerable:!1,configurable:!0}),t.prototype.toContext=function(){return{cannotPark:this.reason}},t}(State$2);function unpackPHPArrayObject(e,t){var n=e[t];if(n&&!Array.isArray(n))return n}var Parking=function(e){function t(){var t=null!==e&&e.apply(this,arguments)||this;return t.type=Type.Parking,t}return __extends(t,e),t.build=function(e,n){var i=new t;i.domain=e.domainName,i.html=e.template,i.scripts=e.scripts||[],i.javascript=e.inlineJs,i.stylesheet=e.styles,i.imprint=e.imprintText;var o=unpackPHPArrayObject(e,"salesSettings"),r=(null==o?void 0:o.status)&&"NOT_FOR_SALE"!==(null==o?void 0:o.status);if(r){o.status;var a=o.location,s=o.message,c=o.link,d=o.type;i.salesBanner={message:s,href:c,position:a,theme:d}}return n.wantsToServeAds?i.trackingType="ctr":r&&window.location.pathname.startsWith("/listing")?i.trackingType="sales":i.trackingType="visit",i},t.prototype.toContext=function(){return{}},t}(State$2),Sales=function(e){function t(){var t=null!==e&&e.apply(this,arguments)||this;return t.type=Type.Sales,t}return __extends(t,e),t.build=function(e){var n=unpackPHPArrayObject(e,"salesSettings");if(n&&"NOT_FOR_SALE"!==n.status)return window.location.pathname.endsWith("/listing")?new t:void 0},t.prototype.toContext=function(){return{}},Object.defineProperty(t.prototype,"trackingType",{get:function(){return"sales"},enumerable:!1,configurable:!0}),t.prototype.init=function(e){window.context=e;var t=document.createElement("script");t.type="text/javascript",t.src=SALES_JS_URL,document.head.append(t)},t}(State$2),Redirect=function(e){function t(){var t=null!==e&&e.apply(this,arguments)||this;return t.type=Type.Redirect,t}return __extends(t,e),t.build=function(e,n,i){var o=unpackPHPArrayObject(e,"salesSettings"),r=e.zeroClickDelay,a=e.skenzoRedirect,s=e.skenzoUrl,c=e.showInquiryForm,d=e.canZeroClick;e.cannotPark;var l="",u=0,p="";if(i.cannotLoadAds?i.wantsToServeAds?(l=window.location.origin,p="no_ads_redirect"):(null==o?void 0:o.status)&&"NOT_FOR_SALE"!==(null==o?void 0:o.status)?l="".concat(window.location.origin,"/listing"):!1!==d&&((null==n?void 0:n.redirect)?(l=n.redirect,u=r||0,p="zc_redirect"):a&&s&&(l=s,p="skenzo_redirect")):!1!==d&&(null==n?void 0:n.reason)?(null==n?void 0:n.redirect)?(l=n.redirect,u=r||0,p="zc_redirect"):a&&s&&(l=s,p="skenzo_redirect"):window.location.pathname.endsWith("/listing")?"EXTERNAL_MARKET"===(null==o?void 0:o.status)&&(null==o?void 0:o.external)?(l=o.external,p="sales"):"URL"===(null==o?void 0:o.status)&&(null==o?void 0:o.link)&&(l=o.link,p="sales"):c&&(l="".concat(window.location.origin,"/listing")),l){var h=new t;return h.url=l,h.delay=u,h.trackingType=p,h}},t.prototype.toContext=function(){return{}},t}(State$2),browserState=function(){var e,t,n,i,o,r,a=window.screen,s=a.width,c=a.height,d=window.self,l=window.top,u=window.matchMedia,p=window.opener,h=document.documentElement,f=h.clientWidth,g=h.clientHeight;try{r=(new Date).getTimezoneOffset()/60*-1}catch(e){r=null}return{popup:!(!p||p===window),timezone_offset:r,user_preference:null===(e=null===Intl||void 0===Intl?void 0:Intl.DateTimeFormat())||void 0===e?void 0:e.resolvedOptions(),user_using_darkmode:Boolean(u&&u("(prefers-color-scheme: dark)").matches),user_supports_darkmode:Boolean(u),window_resolution:{width:null!=f?f:0,height:null!=g?g:0},screen_resolution:{width:null!=s?s:0,height:null!=c?c:0},frame:l===d?null:{innerWidth:null!==(t=null==d?void 0:d.innerWidth)&&void 0!==t?t:0,innerHeight:null!==(n=null==d?void 0:d.innerHeight)&&void 0!==n?n:0,outerWidth:null!==(i=null==d?void 0:d.outerWidth)&&void 0!==i?i:0,outerHeight:null!==(o=null==d?void 0:d.outerHeight)&&void 0!==o?o:0}}},TRACKING_URL="_tr",trackVisit=function(e,t){var n,i=e.callbacks,o=e.context,r=__assign({ad_loaded_callback:null==i?void 0:i.adLoadedCallback,app_version:version,caf_timed_out:null==i?void 0:i.cafTimedOut,channel:null===(n=null==o?void 0:o.pageOptions)||void 0===n?void 0:n.channel,fd_server_datetime:o.fd_server_datetime,fd_server:o.fd_server,flex_rule:o.flex_rule,host:o.host,ip:o.ip,js_error:o.js_error,no_ads_redirect:o.noAdsRedirect,page_headers:o.page_headers,page_loaded_callback:null==i?void 0:i.pageLoadedCallback,page_method:o.page_method,page_request:o.page_request,page_time:o.page_time,page_url:o.page_url,reportable_channel:o.reportableChannel,template_id:o.templateId,type:t,user_has_ad_blocker:o.user_has_ad_blocker,uuid:o.uuid,zeroclick:o.zeroClick},browserState());fetch("/".concat(TRACKING_URL),{method:"POST",headers:{Accept:"application/json","Content-Type":"application/json"},body:JSON.stringify({signature:encode(r)})})},State$1;!function(){if(!window.CustomEvent){function e(e,t){t=t||{bubbles:!1,cancelable:!1,detail:void 0};const n=document.createEvent("CustomEvent");return n.initCustomEvent(e,t.bubbles,t.cancelable,t.detail),n}e.prototype=window.Event.prototype,window.CustomEvent=e}}(),function(e){e[e.Pending=0]="Pending",e[e.Loaded=1]="Loaded",e[e.Failed=2]="Failed"}(State$1||(State$1={}));var Provider=function(){function e(e){var t=this;this.timeoutSeconds=5,this.handlePixelEvent=function(e){switch(t.state){case State$1.Failed:break;case State$1.Pending:setTimeout((function(){return t.handlePixelEvent(e)}),100);break;case State$1.Loaded:t.onPixelEvent(e)}},this.watch=function(){switch(t.state){case State$1.Loaded:case State$1.Failed:break;case State$1.Pending:t.isLoaded()?t.state=State$1.Loaded:t.isTimedOut()?t.state=State$1.Failed:setTimeout(t.watch,50)}},e&&e.length>0?(this.identifier=e,this.state=State$1.Pending,this.timeoutAt=new Date,this.timeoutAt.setSeconds(this.timeoutAt.getSeconds()+this.timeoutAfter()),this.injectPixel()):this.state=State$1.Failed}return e.prototype.injectPixel=function(){this.injectedAt||(this.injectedAt=new Date,this.inject(),this.watch())},e.prototype.inject=function(){var e=document.createElement("script");e.text=this.script,document.head.appendChild(e)},e.prototype.isTimedOut=function(){return+new Date>=+this.timeoutAt},e.prototype.timeoutAfter=function(){return this.timeoutSeconds},e}(),Facebook=function(e){function t(){return null!==e&&e.apply(this,arguments)||this}return 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__extends(t,e),Object.defineProperty(t.prototype,"script",{get:function(){return""},enumerable:!1,configurable:!0}),t.prototype.inject=function(){var e=document.createElement("script");e.src="https://assets.revcontent.com/master/rev.js",document.head.appendChild(e)},t.prototype.onPixelEvent=function(e){window.rev("event",e)},t.prototype.isLoaded=function(){return!!window.rev},t}(Provider),Taboola=function(e){function t(){return null!==e&&e.apply(this,arguments)||this}return __extends(t,e),Object.defineProperty(t.prototype,"script",{get:function(){return"window._tfa = window._tfa || [];!function (t, f, a, x) {if (!document.getElementById(x)) {t.async = 1;t.src = a;t.id=x;f.parentNode.insertBefore(t, 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Category Archives: fusione
Compiendo un salto di cinque secoli, si trova che nel
xiv secolo gli orologi europei erano i più evoluti da un punto di vista tecnologico. Esploratori come Marco Polo invertirono il senso della diffusione, portando in Oriente le realizzazioni del Vecchio Continente.
Alla base dei sostanziali miglioramenti dei sistemi meccanici di misurazione del tempo si ebbero i meccanismi di scappamento, che permettono una regolazione del sistema.
La regolazione può essere definita come la modalità di condizionamento di una variabile di controllo in un sistema automatico. Nel caso degli orologi, il problema era di far rilasciare in modo non immediato, ma graduale nel tempo, l’energia contenuta in qualche sistema: anzitutto, dei pesi sospesi a corde arrotolate attorno a un asse orizzontale (è ovvio che se l’asse è libero di compiere delle rotazioni, i pesi fanno srotolare la corda che li regge, in modo quasi istantaneo), ma anche delle molle metalliche a spirale.
Il sistema dello scappamento a
foliot, che risolse in modo più che soddisfacente il problema della regolazione, è costituito da una ruota dentata, con numero di denti dispari, che, messa in moto da un sistema di pesi, durante la sua rotazione batte alternativamente contro le due palette di un
foliot (asta in equilibrio rotante, dotata di masse), che a loro volta imprimono una rotazione al medesimo asse al quale sono fissate. Questo movimento oscillante permette la regolazione del movimento dell’asse primario (quello al quale sono appesi i pesi). Il movimento alternato del congegno mira a far sì che l’energia potenziale iniziale, dovuta all’avviamento dell’orologio, trasformatasi poi in energia cinetica, sia dilazionata nel tempo.
Il sistema permette anche una taratura: i bracci del foliot hanno un profilo scanalato, sul quale è agevole collocare i pesi che fanno variare con la propria posizione il momento d’inerzia del sistema. Questa grandezza influisce sulla velocità di rotazione (più propriamente occorrerebbe parlare di velocità angolare, poiché l’asse del foliot ha un movimento alternato, e non compie rotazioni complete), per la costanza del momento angolare, essendo pari a zero quello risultante delle forze applicate, quali la forza di gravità e le reazioni vincolari. Il momento angolare è poi pari al prodotto del momento d’inerzia per la velocità angolare; così, quando si distanziano i pesi dall’asse, il momento d’inerzia dello scappamento a foliot aumenta mentre, affinché il momento angolare non vari, la velocità angolare diminuisce.
La realizzazione di simili congegni passa per un perfezionamento nella produzione dei manufatti metallici. Non è un caso se proprio in questo periodo (si parla del xv secolo) i miglioramenti in campo metallurgico, e in particolare nelle tecniche di fusione del bronzo, consentirono sia la possibilità di produrre orologi meccanici sufficientemente precisi, ma anche campane e cannoni (i primi orologi erano costituiti per lo più proprio in bronzo). Per questi due ultimi manufatti, se è vero che non era richiesta la precisione per un accoppiamento meccanico con altri manufatti, era di fondamentale importanza la precisione nella fusione, ossia l’ottenimento di una colata omogenea per caratteristiche fisico-chimiche.
Ciò fu possibile con il raggiungimento di temperature elevate dei forni dovuto alla scoperta di combustibili (carbone fossile in luogo di quello di legna) con potere calorifico maggiore, ma anche con la possibilità di costruire dei camini di maggiore altezza. A loro volta, le alte temperature dei forni favorirono l’assenza di cricche nei pezzi prodotti per fusione.
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