All 4 books by Edward Tufte now in
paperback editions, $100 for all 4
Visual Display of Quantitative Information
Envisioning Information
Visual Explanations
Beautiful Evidence
Paper/printing = original clothbound books.
Only available through ET's Graphics Press:
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All 4 clothbound books, autographed by the author $150
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Edward Tufte e-books
Immediate download to any computer:
Visual and Statistical Thinking $2
The Cognitive Style of Powerpoint $2
Seeing Around + Feynman Diagrams $2
Data Analysis for Politics and Policy $2
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Edward Tufte one-day course,
Presenting Data and Information
Philadelphia, June 21
New York, June 23, 24
Hartford, June 27
Denver, July 22
Seattle, July 25, 26
Portland, July 28
Geese taking flight (at 300 frames per second)

My favorite parts are the 3D foot-splash prints left behind as the geese lift-off and the details of the wings.

This video is also available on YouTube and Vimeo

-- Edward Tufte

Response to Geese taking flight (in slow motion)

-- Edward Tufte

Response to Geese taking flight (in slow motion)

Early in flight they contract their whole bodies during the downbeat, drawing their center of gravity forward, toward their wings, and the upbeat is so exaggerated it's something different: they slip their wings forward through the air edgewise till the tips are in front of their beaks. They are using more energy pulling themselves forward than keeping themselves up. It's a breaststroke.

-- Niels Olson (email)

On lift off are the geese pumping with their legs and feet for acceleration--like a person on a swing?.

-- ellen/ (email)

On takeoff when close to the water, the downward stroke is carried through so that the wingtips almost come together but with the extreme ends flared out. It gives the appearance of pushing the air mass being displaced by the wings down against the water to take advantage of the ground effect at very low altitude. As the goose gains altitude, this effect would be diminished, and so it can be seen that the downward motion of the wings is much reduced once some altitude has been achieved.

-- James Heimer (email)

Threads relevant to video:
Flame Theater
Multiplicity in visual experiences (ET presentation for a museum show)