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 			<h2>The AEther</h2>
  			<p>In early modern physics, the luminiferous aether (or ether) was believed to be an invisible space-filling substance or field that was a transmission medium for electromagnetic or gravitational forces.</p> 
 			<h2>Tait's Tabulature of Knots</h2>
- 			<p>Peter Guthrie Tait (1837-1901) was a Scottish mathematical physicist, whose investigations in knot theory contributed to the field of topology as a mathematical discipline. His tabulations of knots with ten crossings, which became known as the <em>Tait conjectures<em>, arose out of experiements he conducted with William Thomspon (Lord Kelvin) in 1867 at the University of Edinburgh.</p>
+ 			<p>Peter Guthrie Tait (1837-1901) was a Scottish mathematical physicist, whose investigations in knot theory contributed to the field of topology as a mathematical discipline. His tabulations of knots with ten crossings, which became known as the <em>Tait conjectures</em>, arose out of experiements he conducted with William Thomspon (Lord Kelvin) in 1867 at the University of Edinburgh.</p>
 			<a id="knot" name="knot"><h2>Knots</h2>
 			<p>A knot is an entanglement, an intentional complication in cordage.</p>
 			<h2>Knot Theory</h2>