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    <title>Betula daily digest</title>
    <link>http://links.ndpi.io</link>
    <description>Every day, a list of all links posted that day is sent.</description>
    <managingEditor> (ndpi)</managingEditor>
    <pubDate>Mon, 10 Aug 2026 11:19:14 +0000</pubDate>
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      <title>Betula 2026-08-09</title>
      <link>http://links.ndpi.io/day/2026-08-09</link>
      <description>&#xA;&lt;h2&gt;&lt;a href=&#34;/194&#34;&gt;Structure and Interpretation of Classical Mechanics&lt;/a&gt;&lt;/h2&gt;&#xA;&lt;p&gt;🔗 &lt;a href=&#34;https://mitp-content-server.mit.edu/books/content/sectbyfn/books_pres_0/9579/sicm_edition_2.zip/book.html&#34;&gt;mitp-content-server.mit.edu/books/content/sectbyfn/books_pres_0/9579/sicm_edition_2.zip/book.html&lt;/a&gt;&lt;/p&gt;&#xA;&lt;p&gt;🏷 &lt;a href=&#34;/tag/learning&#34;&gt;learning&lt;/a&gt;, &lt;a href=&#34;/tag/open-culture&#34;&gt;open-culture&lt;/a&gt;, &lt;a href=&#34;/tag/physics&#34;&gt;physics&lt;/a&gt;, &lt;a href=&#34;/tag/simulation&#34;&gt;simulation&lt;/a&gt;&lt;/p&gt;&#xA;&lt;article class=&#34;mycomarkup-doc&#34;&gt;&#xA;&lt;/article&gt;&#xA;&#xA;</description>
      <author>ndpi</author>
      <pubDate>Sun, 09 Aug 2026 23:59:59 +0000</pubDate>
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