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SUMMARY:The Evolution of High-Frequency Radio Astronomy - Professor Richar
 d Hills (Cavendish Astrophysics)
DTSTART:20130123T160000Z
DTEND:20130123T170000Z
UID:TALK42593@talks.cam.ac.uk
CONTACT:David Titterington
DESCRIPTION:In its first phases radio astronomy was restricted to frequenc
 ies of about 30 MHz to 3 GHz (wavelengths of roughly 10 meters down to 0.1
  meters)\, but since the 1960’s the ‘high frontier’ of the field has
  moved successively to tens\, then hundreds and now thousands of GHz\, i.e
 . to cover the millimetre and sub-millimetre wavebands.  This advance has 
 been largely driven by technological developments – for example in the d
 esign of antennas and receivers – and by the opening up of suitable obse
 rving sites.  At the same time the scale of these activities has expanded 
 from the level of individual efforts to that of worldwide collaborations. 
  The lecture will outline the key steps in this evolution and describe som
 e of the dramatic scientific discoveries that have followed.
LOCATION:Pippard Lecture Theatre\, Cavendish Laboratory
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