<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>https://ecency.com</link><image><url>https://ecency.com/logo512.png</url><title>RSS Feed</title><link>https://ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Sun, 07 Jun 2026 12:14:42 GMT</lastBuildDate><atom:link href="https://ecency.com/hot/ellipse/rss.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[Kepler's Third Law: Square of Planet's Orbital Period is Proportional to the Cube of its Major Axis]]></title><description><![CDATA[In this video, I derive Kepler's 3rd Law of planetary motion and obtain a formula for a planet's period of orbit around the Sun in terms of the length of its major axis. Using the results of Laws 1 and]]></description><link>https://ecency.com/@mes/lkt-mq1xqsvd-mmpklbef</link><guid isPermaLink="true">https://ecency.com/@mes/lkt-mq1xqsvd-mmpklbef</guid><category><![CDATA[hive-111030]]></category><dc:creator><![CDATA[mes]]></dc:creator><pubDate>Sat, 06 Jun 2026 05:52:24 GMT</pubDate><enclosure url="https://i.ecency.com/p/2r8F9rTBenJQfQgENeTSahwbgwXbiWivavXVxnXvHWdq1EHJJvCdc95rHgEthPbv1iJuYyRpZ4QZGS1QAmwbkBUPuMiQapNbdatYWkHThUA4qKpBQw6Ps7t8uq6Q3RRod?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Kepler's Third Law: Square of Planet's Orbital Period is Proportional to the Cube of its Major Axis]]></title><description><![CDATA[3Speak - YouTube - Telegram - Summary - Notes - Sections playlist - Vector Functions playlist - MES Links In this video, I derive Kepler's 3rd Law of planetary motion and obtain a formula for a planet's]]></description><link>https://ecency.com/@mes/3speak-1780703532917</link><guid isPermaLink="true">https://ecency.com/@mes/3speak-1780703532917</guid><category><![CDATA[hive-128780]]></category><dc:creator><![CDATA[mes]]></dc:creator><pubDate>Fri, 05 Jun 2026 23:52:12 GMT</pubDate><enclosure url="https://i.ecency.com/p/AmRc67RgYaWTamZtjiRVK9pxDgRdg2RtnXmG5dbeGuzK3WNfkBktwpffUqdSNySmADTn7icj6JjYVtDsDxq2EMeyYiEV5vAgJx78A3JtNBv2tbCQmSnzKKFhSihai1CYV8K11JLDpECpVF1FnBV3Y547uL1grqHp?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Kepler's Second Law: A Planet's Orbit Sweeps out Equal Areas in Equal Times]]></title><description><![CDATA[In this video, I derive Kepler's 2nd law of planetary motion and show that the line joining the Sun to a planet sweeps out equal areas in equal times. In other words, the rate of change of the area of]]></description><link>https://ecency.com/@mes/lkt-mq021nkr-fmh3v8il</link><guid isPermaLink="true">https://ecency.com/@mes/lkt-mq021nkr-fmh3v8il</guid><category><![CDATA[hive-111030]]></category><dc:creator><![CDATA[mes]]></dc:creator><pubDate>Thu, 04 Jun 2026 22:17:12 GMT</pubDate><enclosure url="https://i.ecency.com/p/99pyU5Ga1kwqSXWA2YKhumhz7Hg4EEC3WjFcqDyUBsoYt1cwQ5pLa6gQ6JYxG6cosi8LF2fw5NNmPmM7BWnefch2ARbUq8muUJb4GogLZXd21ZE9sq62oKkZCpmhufjxFR?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Kepler's First Law: Planets Revolve around the Sun in an Ellipse]]></title><description><![CDATA[In this video, I derive Kepler's 1st law of planetary motion entirely from Newton's second law of motion and Newton's law of universal gravitation, while making extensive use of the calculus of vector]]></description><link>https://ecency.com/@mes/lkt-mpwynju0-mq7hw8m8</link><guid isPermaLink="true">https://ecency.com/@mes/lkt-mpwynju0-mq7hw8m8</guid><category><![CDATA[hive-111030]]></category><dc:creator><![CDATA[mes]]></dc:creator><pubDate>Tue, 02 Jun 2026 18:19:57 GMT</pubDate><enclosure url="https://i.ecency.com/p/2r8F9rTBenJQfQgENeTSahwbgwXbiWivavXVxnXvHWdq1EHJJvCdc95bHuLFA5y4sZiM1TnFcAERNyEkJ8RgaedKoGAFgfpZTUZNjkShuLqFUxsGmsPmWQdzMQ2zccJcP?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>