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.
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.
Posted by speakingofprecision 
