BEGIN:VCALENDAR
PRODID:-//Columba Systems Ltd//NONSGML CPNG/SpringViewer/ICal Output/3.3-
 M3//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20190319T115701Z
DTSTART:20190327T180000Z
DTEND:20190327T193000Z
SUMMARY:On the scattering of electromagnetic waves by fractal screens: a 
 Rayleigh-Sommerfeld approach
UID:{http://www.columbasystems.com/customers/uom/gpp/eventid/}y17l-jtfq06
 1w-y6v52m
DESCRIPTION:The scattering of plane waves by complex domains (self-simila
 r or fractal obstructions characterized by roughness across many scales)
  is a problem of fundamental interest for physicists and applied mathema
 ticians. \n\nIn laser optics\, for instance\, descriptions of light fiel
 ds after they have interacted with fractal screens are typically based o
 n the well-known Fresnel diffraction equation or\, more commonly\, Fouri
 er transforms and the Fraunhofer (far-field) limit. These simplified mod
 els can work well in some fairly restrictive parameter regimes\, but the
 y are not always entirely satisfactory. \n\nHere\, we develop a more gen
 eral formulation for wave scattering based on the Helmholtz equation and
  Rayleigh-Sommerfeld integrals. Such as an approach\, in conjunction wit
 h the Kirchhoff approximation\, can be computationally expensive but it 
 is free from many of the physical limitations inherant to more tradition
 al methods. \n\nA range of complex domains will be considered\, includin
 g preliminary results for screens based on the classic fractal shapes of
  Cantor (sets and dusts) and Sierpinski (carpets and triangles).\nJames 
 Chrsitian is a lecturer in physics at the University of Salford\; his cu
 rrent research interests involve some theoretical problems in electromag
 netics and classical fluids (www.seek.salford.ac.uk/profiles/JCHRISTIAN.
 jsp).\n\nHolly Middleton-Spencer is now a PhD student at the University 
 of Newcastle studying turbulance in superfluids\; she has recently compl
 eted an MSc at Salford considering wave diffraction by Cantor screens.\n
 \nPlease visit Eventbrite to secure your place: https://www.eventbrite.c
 o.uk/e/on-the-scattering-of-electromagnetic-waves-by-fractal-screens-tic
 kets-58437362725\n\nFor further information\, please contact Margaret Ea
 stwood margareteastwoodimanw@gmail.com\n\nNo charge is made to attend me
 etings. Non-IMA members are welcome.\n\nRefreshments for IMA-members are
  available from 5:45pm.\n\nPlease let us know 48 hours in advance if you
  have any special access requirements.\n\nPlease see https://ima.org.uk/
 branches/north-west/ for the Draft Lecture Schedule for 2018-2019
STATUS:TENTATIVE
TRANSP:TRANSPARENT
CLASS:PUBLIC
LOCATION:Frank Adams Room 1\, Alan Turing Building\, Manchester
END:VEVENT
END:VCALENDAR