青瓷

Multi tool use
本文介紹的是歷史。關於青瓷的电视剧,請見「
青瓷 (电视剧)」。

10世紀晚期宋朝(960年-1279年)灰砂岩青瓷釉执壶;壺嘴形若鳳首。
青瓷是表面施有青色釉的瓷器。青瓷色调的形成,主要是胎釉中含有一定量的氧化铁,在还原焰气氛中焙烧所致。但是有些青瓷因為含铁量不純化,还原气氛並不充足,色调便會呈现黄色或者黄褐色。独特的灰绿色青瓷釉是釉胎在烧结中从三氧化二铁转换成一氧化铁的氧化铁化合物转换的结果。[1]
歷史
青瓷在西方亦有用于描述灰绿色。王仲殊(1982年)声称,这类的陶瓷釉碎片从浙江省一处东汉(25年-220年)古墓挖掘出土;他还声称,此类型陶瓷到了三国(220年-265年)已经家喻户晓。[2]学者理查德·杜瓦(2002年)則不同意王仲殊的分类,指出真正的青瓷烧制技术──炉温至少需要1,260°C(2,300°F),匠人一般偏好炉温范围为1,285°到1,305°C(2345°到2381°F),并且经过降火过程──直至北宋(960年-1127年)初期才被发明。[1]
学者奈杰尔·伍德(Nigel Wood,1999年)指出,最早在北宋时期製造出的龙泉青瓷器皿,有著青、蓝绿及橄榄绿色釉,并且含有大量硅与碱的成分,在后来脱离了粗陶器的窠臼而造就了景德瓷与德化白瓷的辉煌。[3]
圖集
相關參見
參考注釋
^ 1.01.1 Dewar (2002), 42.
^ Wang (1982), 1982.
^ Wood (1999), 75–76.
 | 维基共享资源中相关的多媒体资源:青瓷
|
ebW85ZGYNSbn9g7VMYvqmRya
Popular posts from this blog
Ramiro Burr's New Blog - to go back: www.ramiroburr.com From Latin rock to reggaeton, boleros to blues,Tex-Mex to Tejano, conjunto to corridos and beyond, Ramiro Burr has it covered. If you have a new CD release, a trivia question or are looking for tour info, post a message here or e-mail Ramiro directly at: musicreporter@gmail.com Top Tejano songwriter Luis Silva dead of heart attack at 64 By Ramiro Burr on October 23, 2008 8:40 AM | Permalink | Comments (12) | TrackBacks (0) UPDATE: Luis Silva Funeral Service details released Visitation 4-9 p.m. Saturday, Rosary service 6 p.m. Saturday at Porter Loring, 1101 McCullough Ave Funeral Service 10:30 a.m. Monday St. Anthony De Padua Catholic Church, Burial Service at Chapel Hills, 7735 Gibbs Sprawl Road. Porter Loring (210) 227-8221 Related New Flash: Irma Laura Lopez: long time record promoter killed in accident NewsFlash: 9:02 a.m. (New comments below) Luis Silva , one of the most well-known ...
1 I having trouble getting my ResourceDictionary.MergedDictionaries to load from app.xaml. My WPF app has a static class with a Main defined and startup object set to it. Within Main I created an instance of App and run it. The override OnStartup fires and the mainwindow.cs InitializeComponent gives the error "Message "Cannot find resource named 'MaterialDesignFloatingActionMiniAccentButton'. If I put the resources in the mainwindow.xaml everything is fine, but I wanted them to load at the app level so I they are not in each page. Any help appreciated. public partial class App protected override void OnStartup(StartupEventArgs e) base.OnStartup(e); var app = new MainWindow(); var context = new MainWindowViewModel(); app.DataContext = context; app.Show(); from the Main.. var app = new App(); app.Run(); app.xaml.. <Application x:Class="GS.Server.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:...
up vote 2 down vote favorite There is a clear pattern that show for two separate subsets (set of columns); If one value is missing in a column, values of other columns in the same subset are missing for any row. Here is a visualization of missing data My tries up until now, I used ycimpute library to learn from other values, and applied Iterforest. I noted, score of Logistic regression is so weak (0.6) and thought Iterforest might not learn enough or anyway, except from outer subset which might not be enough? for example the subset with 11 columns might learn from the other columns but not from within it's members, and the same goes for the subset with four columns. This bar plot show better quantity of missings So of course, dealing with missings is better than dropping rows because It would affect my prediction which does contain the same missings quantity relatively. Any better way to deal with these ? [EDIT] The nullity pattern is confirmed: machine-learning cor...