This is awesome photography and will convince you that perhaps there is some Magical “Slinky Antigravity Technology” involved that keeps the bottom motionless as the top of the Slinky descends.
[youtube http://www.youtube.com/watch?v=uiyMuHuCFo4&w=560&h=315]
Unless you can get your head around the idea of the slinky as a system and some fundamental physics concepts.
A tip of the hat to the folks at Questacon who did the slow motion Photography.
And to Kottke.org one of the longest running and most interesting blogs out there.