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SUMMARY:Balancing a ball on a moving vertical wall covered in viscous flui
 d - Tom Mullin\, Department of Physics and Astronomy\, University of Manch
 ester
DTSTART:20140314T160000Z
DTEND:20140314T170000Z
UID:TALK50144@talks.cam.ac.uk
CONTACT:Dr C. P.  Caulfield
DESCRIPTION:We present the results of experimental investigations into bal
 ancing\nheavy balls and cylinders on a vertical moving wall using a thin l
 ayer of\nvery viscous fluid. It is found that balance can be achieved over
  a narrow range of wall speeds so that a particle can be held at a fixed h
 eight. The fluid motion around the object is complicated in detail and yet
  the critical values for fixed point behaviour show simple scaling with th
 e diameter of the particles. Fluctuations become important near critical c
 onditions and clear differences are found in the distributions for the mot
 ion of cylinders and spheres.
LOCATION:MR2\, Centre for Mathematical Sciences\, Wilberforce Road\, Cambr
 idge
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