Secret to the leap? Not the flea's knees

It's Friday, so here's today's Science Friday video. Science Friday
Science FridayCourtesy Science Friday
"Fleas are admirable jumpers -- a talent that humans have recognized for thousands of years, according to engineer Greg Sutton. Yet, until this week, exactly how fleas propel themselves wasn't understood. Sutton and Malcolm Burrows, of the University of Cambridge, filmed fleas jumping, analyzed flea anatomy, made mathematical models and cracked the flea leap mystery. It's not in the knees."

Your Comments, Thoughts, Questions, Ideas

bryan kennedy's picture

I love the comparison with the blinking eye. It's often so hard to get a sense of how fast something is happening in these high-speed videos.

posted on Fri, 02/11/2011 - 3:49pm
KelsiDayle's picture
KelsiDayle says:

Flea's jump so quickly!

Isn't it neat how fleas have a much shorter time scale relative to humans whereas rocks have an enormously longer time scale comparatively?

As a variable, time is super important to how we understand the natural world.

posted on Mon, 02/14/2011 - 2:09pm
Anonymous's picture
Anonymous says:

i really love this movie

posted on Wed, 05/25/2011 - 1:42pm
margaret's picture
margaret says:

soooo cool!

posted on Tue, 06/28/2011 - 12:40pm
jamesbullet's picture
jamesbullet says:


posted on Thu, 02/23/2012 - 4:59am

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