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SUMMARY:Alan Champneys: Why pedestrian bridges wobble - synchronisation an
d the wisdom of the crowd - Alan Champneys (University of Bristol)
DTSTART;VALUE=DATE-TIME:20200311T173000Z
DTEND;VALUE=DATE-TIME:20200311T183000Z
UID:https://talks.ox.ac.uk/talks/id/4754d93f-9a6e-4ce3-a7da-289e00ffce91/
DESCRIPTION:There is a beautiful mathematical theory of how independent ag
ents tend to synchronise their behaviour when weakly coupled. Examples inc
lude how audiences spontaneously rhythmically applause and how nearby pend
ulum clocks tend to move in sync. Another famous example is that of the Lo
ndon Millennium Bridge. On the day it opened\, the bridge underwent unwant
ed lateral vibrations that are widely believed to be due to pedestrians sy
nchronising their footsteps.\n\nIn this talk Alan will explain how this th
eory is in fact naive and there is a simpler mathematical theory that is m
ore consistent with the facts and which explains how other bridges have be
haved including Bristol's Clifton Suspension Bridge. He will also reflect
on the nature of mathematical modelling and the interplay between mathemat
ics\, engineering and the real world. \n\nAlan Champneys is a Professor of
Applied Non-linear Mathematics at the University of Bristol. \n\nPlease e
mail external-relations@maths.ox.ac.uk to register.\n\nWatch live:\nhttps:
//www.facebook.com/OxfordMathematics/\nhttps://livestream.com/oxuni/Champn
eys\n\nThe Oxford Mathematics Public Lectures are generously supported by
XTX Markets.\n\n\nSpeakers:\nAlan Champneys (University of Bristol)
LOCATION:Mathematical Institute (Lecture Theatre 1)\, Woodstock Road OX2 6
GG
TZID:Europe/London
URL:https://talks.ox.ac.uk/talks/id/4754d93f-9a6e-4ce3-a7da-289e00ffce91/
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DESCRIPTION:Talk:Alan Champneys: Why pedestrian bridges wobble - synchroni
sation and the wisdom of the crowd - Alan Champneys (University of Bristo
l)
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