Physics & Astronomy (School of): Recent submissions

Now showing items 251-255 of 662

    • Drag forces in liquid helium II 

      Martin, Colin N. B. (University of St Andrews, 1969) - Thesis
      Measurements of drag forces an spheres end a cylinder in open rectangular channels in liquid helium II heat flow and superflow wore mode at temperatures between 1.3°K and the λ-point. The drag forces were measured by the ...

    • Dissipative flow in the superfluid helium film in the temperature region 1.63K to 0.01K 

      Toft, Michael W. (University of St Andrews, 1978) - Thesis
      Experiments on helium film flow over a stainless steel beaker rim were carried out in the temperature region 1.63K to 11mK. No previous measurements have been made below 35mK. The results of other studies of film flow below ...

    • Measuring the Hubble constant from reverberating accretion discs in active galaxies 

      Collier, Stefan J (University of St Andrews, 1999) - Thesis
      The standard paradigm of active galactic nuclei (AGN) postulates that their luminosity, L ~ 10³⁹⁻⁴⁸erg s⁻¹, derives from the accretion of gas onto a supermassive black hole, mass M ~ 10⁶⁻⁹M☉, at the centre of a host galaxy. ...

    • A spectroscopic study of high mass X-ray binaries 

      Reynolds, Alastair P. (University of St Andrews, 1992) - Thesis
      Observations of four massive x-ray binary stars are presented, based on data accumulated between February 1989 and August 1991. Using modern techniques of spectroscopic data analysis, velocity curves are derived for three ...

    • A spectroscopic study of binary systems 

      McLean, Brian John (University of St Andrews, 1981) - Thesis
      Spectroscopic observations of some of the brighter W Ursae Majoris type contact binaries in the northern hemisphere have been obtained at a medium dispersion of 20-30 Å/mm. A computer program has been developed to process ...