<div dir="auto"><div>The derivative of kinetic energy is momentum.</div><div><br></div><div data-smartmail="gmail_signature">---<br>Frank C. Wimberly<br>140 Calle Ojo Feliz, <br>Santa Fe, NM 87505<br><br>505 670-9918<br>Santa Fe, NM</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Jul 18, 2025, 8:31 AM Nicholas Thompson <<a href="mailto:thompnickson2@gmail.com">thompnickson2@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div>Today George introduced me to
<h4 style="margin-left:40px">
</h4><h4 style="margin-left:40px"><i>• Émilie du Châtelet (1740):</i></h4><div style="margin-left:40px">
</div><p style="margin-left:40px"><i><b>In her translation/commentary on Newton, she clarified and defended Leibniz’s vis viva over Newtonian momentum. Still no “potential energy” in the modern sense, but momentum vs. velocity-squared debates were live.</b></i></p>
<p>I thought I would pass her along to you in case you had never met her.</p><p>Nick. </p><p><br></p><p> Nick</p>
</div><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Nicholas S. Thompson</div><div>Emeritus Professor of Psychology and Ethology</div><div>Clark University</div><div><a href="mailto:nthompson@clarku.edu" target="_blank" rel="noreferrer">nthompson@clarku.edu</a></div><a href="https://wordpress.clarku.edu/nthompson" target="_blank" rel="noreferrer">https://wordpress.clarku.edu/nthompson</a></div></div></div>
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