The transverse arch of human foot
40 mins 6 secs,
153.30 MB,
iPod Video
480x270,
29.97 fps,
44100 Hz,
521.96 kbits/sec
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About this item
| Description: |
Mandre, S
Monday 18th September 2017 - 13:30 to 14:10 |
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| Created: | 2017-09-19 13:11 |
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| Collection: | Growth form and self-organisation |
| Publisher: | Isaac Newton Institute |
| Copyright: | Mandre, S |
| Language: | eng (English) |
| Distribution: |
World
(downloadable)
|
| Explicit content: | No |
| Aspect Ratio: | 16:9 |
| Screencast: | No |
| Bumper: | UCS Default |
| Trailer: | UCS Default |
| Abstract: | Fossil record indicates that the emergence of arches in human ancestral feet coincided with a transition from an arboreal to a terrestrial lifestyle. Propulsive forces exerted during walking and running load the foot under bending, which is distinct from those experienced during arboreal locomotion. I will present mathematical models with varying levels of detail, accompanied by data from human subject experiments and fossilized human ancestral feet, to illustrate a simple function of the transverse arch. Just as we curve a dollar bill in the transverse direction to stiffen it while inserting it in a vending machine, the transverse arch of the human foot stiffens it for bending
deformations. A fundamental interplay of geometry and mechanics underlies this stiffening -- curvature couples the soft out-of-plane bending mode to the stiff in-plane stretching deformation. |
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Available Formats
| Format | Quality | Bitrate | Size | |||
|---|---|---|---|---|---|---|
| MPEG-4 Video | 640x360 | 1.93 Mbits/sec | 582.40 MB | View | Download | |
| WebM | 640x360 | 607.03 kbits/sec | 178.36 MB | View | Download | |
| iPod Video * | 480x270 | 521.96 kbits/sec | 153.30 MB | View | Download | |
| MP3 | 44100 Hz | 249.79 kbits/sec | 73.43 MB | Listen | Download | |
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