Now showing items 1-20 of 231

  • The influence of foreign gases on gaseous spectra 

    Roy, Angus S. (University of St Andrews, 1933) - Thesis
    This thesis is divided into two parts; Part I consisting of the theory and Part II the experimental work. Part I is divided into three sections; in Section 1 a summary is given of collision processes and how they have been ...
  • Electron scattering in gases 

    Baines, Gordon Owen (University of St Andrews, 1935) - Thesis
    This thesis is divided into two parts; the first containing theoretical work and discussions; and the second the experimental work. Section 1 contains a discussion of the stationary states in an atom and the kinetic theory ...
  • Ionisation in mercury vapour and helium 

    M'Ewen, Marjorie B. (University of St Andrews, 1938) - Thesis
    The greater part of the experimental research, described in this thesis, has been devoted to an investigation, by direct electrical methods, of the formation of ionised molecules in mercury vapour and helium. […] This ...
  • Investigation of the magnetic properties of copper, aluminium and iron-copper alloys 

    Hutchison, T. S. (Thomas S.) (University of St Andrews, 1949) - Thesis
    Several workers have previously investigated the magnetic properties of copper and aluminium, but in most cases too small regard has been paid to the changes in magnetic susceptibility brought about by mechanical and thermal ...
  • Some aspects of ion motion in liquid helium : the study of mobility discontinuities in superfluid helium (and liquid nitrogen), and the influence of grids on the transmission of an ion beam 

    Doake, Christopher S. M. (University of St Andrews, 1972) - Thesis
    We were unable to verify the existence of ion mobility discontinuities in either superfluid helium at 1 K or liquid nitrogen. The velocity-field dependence in helium was described by an increased interaction with the normal ...
  • An investigation of molecular opacities for late-type stars 

    Sharp, Christopher Martin (University of St Andrews, 1981) - Thesis
    This work investigates molecular opacities under conditions appropriate to the atmospheres of late-type stars. Given a specified initial abundance of the chemical elements, the equations of atomic ionization and molecular ...
  • A theoretical study of population II Cepheids with periods in the range 10-20 days 

    Bridger, Alan (University of St Andrews, 1984) - Thesis
    A theoretical study of population II variables with periods in the range 10 - 20 days (W Virginis variables) is presented. A modified hydrodynamic Christy code is used in conjunction with the Carson opacities, in ...
  • Magnetohydrodynamic waves in structured atmospheres 

    Edwin, Patricia Mary (University of St Andrews, 1985) - Thesis
    The effect of structuring, in the form of magnetic or density inhomogeneities, on the magnetohydrodynamic (mhd) waves of an infinite plasma is investigated. The appropriate dispersion formulae, in both Cartesian and ...
  • Stellar pulsation and the RV Tauri phenomenon 

    Worrell, John Kingsley (University of St Andrews, 1985-03) - Thesis
    On the basis of observational data it is argued that RV Tauri variables, and probably yellow semiregular (SRd) variables, are closely related in every way to type II cepheid stars. Assuming that a single mass (~O.6 M~) is ...
  • Objective-prism and slit-spectra redshifts in a study of the distribution of galaxies 

    Parker, Quentin Andrew (University of St Andrews, 1986) - Thesis
    A thorough and detailed investigation into the accuracy, reliability and consistency of the objective-prism redshift technique with changes in plate material, measuring machine and reduction techniques has been undertaken. ...
  • A study of U Aquarii and the nucleosynthesis of neutrons and S-process elements in evolved stars of low mass 

    Malaney, Robert A. (University of St Andrews, 1986) - Thesis
    The origin of the extreme hydrogen deficiency observed in the R Coronae Borealis (RCrB) stars remains poorly understood. A likely mechanism for producing this deficiency is one whereby the original hydrogen envelope of ...
  • Investigation of a resistive anode detector for astronomical spectroscopy 

    Clampin, Mark (University of St Andrews, 1986) - Thesis
    A large format two dimensional photon counting detector has been evaluated as a detector for astronomical spectroscopy. The design comprises an 320 photocathode, a tandem MCP gain stage and a circular arc terminated ...
  • Fourier analysis of unequally-spaced time series : with applications to the study of helium stars and binary systems 

    Skillen, W. J. I. (Ian) (University of St Andrews, 1986) - Thesis
    The application of the discrete Fourier transform to the determination of the frequency content of unevenly-sampled astronomical time series is discussed, and an interactive computer package which incorporates a variety ...
  • An investigation of contact and non-contact binary systems 

    McFarlane, Thomas M. (University of St Andrews, 1986) - Thesis
    Spectroscopic and photometric observations of six late-type contact and near-contact binaries are presented, and the results of the analyses discussed. Absolute dimensions have been deduced for three systems: YY Ceti. CX ...
  • A study of the mathematics of supersymmetry theories 

    Williams, Denis (University of St Andrews, 1986) - Thesis
    This Thesis consists of three parts. In the first part a theory of integration is constructed for supermanifolds and supergroups. With this theory expressions for the invariant integral on several Lie supergroups are ...
  • A study of early-type close binaries 

    Bell, Steven A. (University of St Andrews, 1987) - Thesis
    It has become increasingly clear that many binary systems will pass through a common envelope stage at some point during their evolution. For short period systems composed of main-sequence 0 and early B stars this stage ...
  • The development and commissioning of an 8-channel astronomical photometer 

    Pollard, Chrisopher A. (University of St Andrews, 1988) - Thesis
    The development and commissioning of an 8-channel astronomical photometer is described. The design is based on a low dispersion grating spectrograph in which the spectrum produced is focussed onto a mosaic of mirrors which ...
  • An acoustical investigation of the concert harp 

    Bell, Alexander J. (University of St Andrews, 1988) - Thesis
    This thesis is a report of acoustical research on the concert harp. The harp has an established place in the symphony orchestra and is reacquiring its role as a solo chamber instrument that it had before the development ...
  • On microdosimetry of neutrons of selectable energy in mixed (n,y) fields 

    Saion, Elias bin. (University of St Andrews, 1989) - Thesis
    Biological damage of tissue due to intermediate energy neutrons is generally known to be very important in radiobiology and radiation protection. However, there is no suitable method to determine the quality of these ...
  • The pulsation of Delta Scuti stars 

    Milligan, Helen (University of St Andrews, 1989) - Thesis
    A theoretical study of the pulsation of Delta Scuti stars is presented. A modified Henyey code is used to produce a grid of evolutionary models of population I composition, spanning the area of the Instability Strip ...