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    <title>metallurgy &amp;mdash; Musings by @rg</title>
    <link>https://wordsmith.social/rgx/tag:metallurgy</link>
    <description>A place to jot down ideas, notes, pointers.</description>
    <pubDate>Wed, 29 Apr 2026 12:23:15 +0000</pubDate>
    <item>
      <title>STEM â‰¥ Prussian Blue in the Art of Japan </title>
      <link>https://wordsmith.social/rgx/stem-prussian-blue-in-the-art-of-japan</link>
      <description>&lt;![CDATA[&#xA;&#xA;-----&#xA;#art #ukiyo-e #pigment #chemistry #chemie #metallurgy #metallurgie &#xA;&#xA;HISTORY OF TECHNOLOGY IN JAPAN -- PRUSSIAN BLUE &#xA;&#xA;Prussian blue or Berlin blue is the oldest modern synthetic color.  It has been in use since its discovery in Berlin in 1704. The pigment is made from ferric ferrocyanide.&#xA;&#xA;see ColourLex &#34;Prussian blue&#34;&#xA;and see Wikipedia &#34;Prussian blue&#34;&#xA;&#xA;CASE STUDY.  The history of the use of Prussian blue in Japan is an illustrative example of a process of rapid acceptance.  The effects of the use of this synthetic pigment in Japan is a case study in the history of technology.&#xA;&#xA;A &#34;NEW&#34; COLOR.   This &#34;new&#34; powdered pigment was imported to Japan from Holland in the 18th century.  -- see JAANUS (Japanese Architecture and Art Net Users System), &#34;Beronin-ai&#34;  ãƒ™ãƒ­ãƒªãƒ³è— &#xA;&#xA;This hue of blue was used by Katsushika Hokusai in 1831 in his most famous woodblock print, &#34;Under the Wave, off Kanagawa,&#34; also known as &#34;The Great Wave.&#34;  Hokusai&#39;s popular artwork was the first to exploit the pigment, which had recently become cheaply available from China.  &#xA;&#xA;see British Museum, &#34;Making Waves&#34;&#xA;see Wikipedia &#34;The Great Wave off Kanagawa&#34;&#xA;see Prussian Blue in a close-up detail of Hokusaiâ€™s Great Wave:&#xA;&#xA;In Japan, the success of Prussian blue caused a vogue for blue colors in ukiyo-e prints of the late 1820s and 1830s. &#xA;&#xA;see Wikipedia &#34;Aizuri-e&#34; &#xA;and see JAANUS, &#34;Azuri&#34; è—æ‘º&#xA;&#xA;QUESTION: Does the story of the introduction and expanding use of Prussian blue provide a good example of STEM-focused evolution? Is it possible that this could become a teaching tool?&#xA;&#xA;QOTO = Question Others to Teach Ourselves?&#xA;&#xA;-----&#xA;&#xA;Editor&#39;s Note : This blog post is being prepared to celebrate the research work of our fellow QOTO.org user Chikara, @Chikara@Qoto.org , who has been sharing the fruits of his curiosity and study of the evolution of Technology, Arts and Science in Japan.&#xA;&#xA;I had meant to suggest to him that his posts would look wonderful in a Blog format, and be preserved, made easier to find for anyone interested in following them.&#xA;&#xA;Upon seeing his post of the Prussian Blue history, and the beautiful gravure of the Great Wave, I knew the moment was now.&#xA;&#xA;Thank you, Chikara, for sharing with us all of your findings. &#xA;&#xA;ãƒã‚«ãƒ©ã€ç§ãŸã¡ã¨ã‚ãªãŸã®èª¿æŸ»çµæžœã®ã™ã¹ã¦ã‚’å…±æœ‰ã—ã¦ã„ãŸã ãã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚&#xA;&#xA;-----&#xA;&#xA;Thank you for reading this, please feel free to comment about this post, your input is important.  This page created entirely in MarkDown language. &#xA;&#xA;RG. a href=&#34;https://qoto.org/@designRG&#34;@design_RG@Qoto.org/a&#xA;]]&gt;</description>
      <content:encoded><![CDATA[<p><img src="https://i.postimg.cc/PfKL0RkV/Great-Wave-print-resize-800p.jpg" alt=""></p>

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<p><a href="/rgx/tag:art" class="hashtag" rel="nofollow"><span>#</span><span class="p-category">art</span></a> <a href="/rgx/tag:ukiyo" class="hashtag" rel="nofollow"><span>#</span><span class="p-category">ukiyo</span></a>-e <a href="/rgx/tag:pigment" class="hashtag" rel="nofollow"><span>#</span><span class="p-category">pigment</span></a> <a href="/rgx/tag:chemistry" class="hashtag" rel="nofollow"><span>#</span><span class="p-category">chemistry</span></a> <a href="/rgx/tag:chemie" class="hashtag" rel="nofollow"><span>#</span><span class="p-category">chemie</span></a> <a href="/rgx/tag:metallurgy" class="hashtag" rel="nofollow"><span>#</span><span class="p-category">metallurgy</span></a> <a href="/rgx/tag:metallurgie" class="hashtag" rel="nofollow"><span>#</span><span class="p-category">metallurgie</span></a></p>

<h4 id="history-of-technology-in-japan-prussian-blue" id="history-of-technology-in-japan-prussian-blue">HISTORY OF TECHNOLOGY IN JAPAN — PRUSSIAN BLUE</h4>

<p>Prussian blue or Berlin blue is the oldest modern synthetic color.  It has been in use since its discovery in Berlin in 1704. The pigment is made from ferric ferrocyanide.</p>
<ul><li>see <a href="https://colourlex.com/project/prussian-blue/" rel="nofollow">ColourLex “Prussian blue”</a></li>
<li>and see <a href="https://en.wikipedia.org/wiki/Prussian_blue" rel="nofollow">Wikipedia “Prussian blue”</a></li></ul>

<p><strong>CASE STUDY.</strong>  The history of the use of Prussian blue in Japan is an illustrative example of a process of rapid acceptance.  The effects of the use of this synthetic pigment in Japan is a case study in the history of technology.</p>

<p><strong>A “NEW” COLOR.</strong>   This “new” powdered pigment was imported to Japan from Holland in the 18th century.  — see <a href="http://www.aisf.or.jp/~jaanus/deta/b/berorinai.htm" rel="nofollow">JAANUS (Japanese Architecture and Art Net Users System), “Beronin-ai”  ãƒ™ãƒ­ãƒªãƒ³è— </a></p>

<p>This hue of blue was used by Katsushika Hokusai in 1831 in his most famous woodblock print, “Under the Wave, off Kanagawa,” also known as “The Great Wave.”  Hokusai&#39;s popular artwork was the first to exploit the pigment, which had recently become cheaply available from China.</p>
<ul><li>see British Museum, <a href="https://blog.britishmuseum.org/making-waves/" rel="nofollow">“Making Waves”</a></li>
<li>see Wikipedia <a href="https://en.wikipedia.org/wiki/The_Great_Wave_off_Kanagawa" rel="nofollow">“The Great Wave off Kanagawa”</a></li>
<li>see Prussian Blue in a close-up detail of Hokusaiâ€™s Great Wave:</li></ul>

<p><img src="https://i.postimg.cc/bvHYkZyV/blue-detail.jpg" alt=""></p>

<p>In Japan, the success of Prussian blue caused a vogue for blue colors in ukiyo-e prints of the late 1820s and 1830s.</p>
<ul><li>see <a href="https://en.wikipedia.org/wiki/Aizuri-e" rel="nofollow">Wikipedia “Aizuri-e”</a></li>
<li>and see <a href="http://www.aisf.or.jp/~jaanus/deta/a/aizuri.htm" rel="nofollow">JAANUS, “Azuri” è—æ‘º</a></li></ul>

<p><strong>QUESTION:</strong> Does the story of the introduction and expanding use of Prussian blue provide a good example of STEM-focused evolution? Is it possible that this could become a teaching tool?</p>

<p><strong>QOTO</strong> = Question Others to Teach Ourselves?</p>

<hr>

<p><strong>Editor&#39;s Note :</strong> This blog post is being prepared to celebrate the research work of our fellow QOTO.org user <a href="https://qoto.org/@chikara" rel="nofollow">Chikara, <a href="https://wordsmith.social/@/Chikara@Qoto.org" class="u-url mention" rel="nofollow">@<span>Chikara@Qoto.org</span></a></a> , who has been sharing the fruits of his curiosity and study of the evolution of Technology, Arts and Science in Japan.</p>

<p>I had meant to suggest to him that his posts would look wonderful in a Blog format, and be preserved, made easier to find for anyone interested in following them.</p>

<p>Upon seeing his post of the Prussian Blue history, and the beautiful gravure of the Great Wave, I knew the moment was now.</p>

<p>Thank you, <strong>Chikara</strong>, for sharing with us all of your findings.</p>

<p>ãƒã‚«ãƒ©ã€ç§ãŸã¡ã¨ã‚ãªãŸã®èª¿æŸ»çµæžœã®ã™ã¹ã¦ã‚’å…±æœ‰ã—ã¦ã„ãŸã ãã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚</p>

<hr>

<p>Thank you for reading this, please feel free to comment about this post, your input is important.  <em>This page created entirely in MarkDown language.</em></p>

<p>RG. <a href="https://qoto.org/@design_RG" rel="nofollow"><a href="https://wordsmith.social/@/design_RG@Qoto.org" class="u-url mention" rel="nofollow">@<span>design_RG@Qoto.org</span></a></a></p>
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      <guid>https://wordsmith.social/rgx/stem-prussian-blue-in-the-art-of-japan</guid>
      <pubDate>Tue, 24 Dec 2019 02:30:11 +0000</pubDate>
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