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	<title>Understanding the Dropping of the Spinning Ball Experiment - Revision history</title>
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	<updated>2026-07-22T08:06:39Z</updated>
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		<id>https://wiki.naturalphilosophy.org/index.php?title=Understanding_the_Dropping_of_the_Spinning_Ball_Experiment&amp;diff=294445&amp;oldid=prev</id>
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		<updated>2026-07-18T23:31:23Z</updated>

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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 19:31, 18 July 2026&lt;/td&gt;
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		<id>https://wiki.naturalphilosophy.org/index.php?title=Understanding_the_Dropping_of_the_Spinning_Ball_Experiment&amp;diff=26051&amp;oldid=prev</id>
		<title>Maintenance script: Imported from text file</title>
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		<updated>2017-01-02T03:11:15Z</updated>

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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 23:11, 1 January 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l17&quot;&gt;Line 17:&lt;/td&gt;
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		<id>https://wiki.naturalphilosophy.org/index.php?title=Understanding_the_Dropping_of_the_Spinning_Ball_Experiment&amp;diff=22178&amp;oldid=prev</id>
		<title>Maintenance script: Imported from text file</title>
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		<updated>2017-01-01T18:34:44Z</updated>

		<summary type="html">&lt;p&gt;Imported from text file&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 14:34, 1 January 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l13&quot;&gt;Line 13:&lt;/td&gt;
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&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Abstract==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Abstract==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The beginning of this author&#039;s work with rotating objects began with moment of inertia measurements of constrained gyroscopes undergoing forced precession. The increased moments of inertia discovered for precessional motion were translated into a series of measurements on pendulums with rotating bobs. Although the discovery of the inertial effects associated with precession and pendulum oscillations were highly suggestive, this author greatly resisted attempts to force him to drop a rotating object for two reasons.[[Category:Scientific Paper]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The beginning of this author&#039;s work with rotating objects began with moment of inertia measurements of constrained gyroscopes undergoing forced precession. The increased moments of inertia discovered for precessional motion were translated into a series of measurements on pendulums with rotating bobs. Although the discovery of the inertial effects associated with precession and pendulum oscillations were highly suggestive, this author greatly resisted attempts to force him to drop a rotating object for two reasons.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Scientific Paper&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;|understanding dropping spinning ball experiment&lt;/ins&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
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		<id>https://wiki.naturalphilosophy.org/index.php?title=Understanding_the_Dropping_of_the_Spinning_Ball_Experiment&amp;diff=5273&amp;oldid=prev</id>
		<title>Maintenance script: Imported from text file</title>
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		<updated>2016-12-30T13:45:48Z</updated>

		<summary type="html">&lt;p&gt;Imported from text file&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{Infobox paper&lt;br /&gt;
| title = Understanding the Dropping of the Spinning Ball Experiment&lt;br /&gt;
| url = [http://www.naturalphilosophy.org/pdf/abstracts/abstracts_282.pdf Link to paper]&lt;br /&gt;
| author = [[Bruce E DePalma]]&lt;br /&gt;
| keywords = [[Spinning ball]], [[inertia]], [[gyroscope]], [[pendulum]], [[spinning bob]]&lt;br /&gt;
| published = 1977&lt;br /&gt;
| journal = [[None]]&lt;br /&gt;
| num_pages = 5&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Read the full paper&amp;#039;&amp;#039;&amp;#039; [http://www.naturalphilosophy.org/pdf/abstracts/abstracts_282.pdf here]&lt;br /&gt;
&lt;br /&gt;
==Abstract==&lt;br /&gt;
&lt;br /&gt;
The beginning of this author&amp;#039;s work with rotating objects began with moment of inertia measurements of constrained gyroscopes undergoing forced precession. The increased moments of inertia discovered for precessional motion were translated into a series of measurements on pendulums with rotating bobs. Although the discovery of the inertial effects associated with precession and pendulum oscillations were highly suggestive, this author greatly resisted attempts to force him to drop a rotating object for two reasons.[[Category:Scientific Paper]]&lt;br /&gt;
&lt;br /&gt;
[[Category:Gravity]]&lt;br /&gt;
[[Category:New Energy]]&lt;/div&gt;</summary>
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