amen zwa, esq.<p>More than four decades ago, I took <a href="https://mathstodon.xyz/tags/quantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>quantum</span></a> mechanics as an undergraduate <a href="https://mathstodon.xyz/tags/EE" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>EE</span></a> student, as a required course on semiconductors. We used a then-popular <a href="https://mathstodon.xyz/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>physics</span></a> textbook on the subject—"Solid State and Semiconductor Physics" by McKelvey. Suffice it to say, this physics textbook wasn't ideal for <a href="https://mathstodon.xyz/tags/engineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>engineering</span></a> students.</p><p>Today, I came across Prof. <a href="https://mathstodon.xyz/tags/Dommelen" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Dommelen</span></a>'s free textbook, "Quantum Mechanics for Engineers", in all its 1600-page glory. And I'm loving it!</p><p><a href="https://web1.eng.famu.fsu.edu/~dommelen/quantum/pdf/index.pdf" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">web1.eng.famu.fsu.edu/~dommele</span><span class="invisible">n/quantum/pdf/index.pdf</span></a></p>