Moving points with linear speed along straight lines, as demonstrated at [url=http://intothecontinuum.tumblr.com/post/57763145216/these-remarks-make-some-interesting-observations] Archery[/url] by Joe DiNoto. This is opposed to moving points sinusoidally, as seen here: * [url=http://www.geogebratube.org/student/m2925] with this applet, [/url] * [url=http://intothecontinuum.tumblr.com/post/58377152931/in-last-weeks-post-we-saw-how-the-motion-of] at this follow up post , [/url] * [url=http://www.geogebratube.org/student/m47585] or with this applet[/url] by John Golden.