Author:
Goss W. M.,Hooker Claire,Ekers Ronald D.
Abstract
AbstractThe theme of interference between radio waves played a key unifying role throughout Pawsey’s career. Pawsey used radio-wave interference to study the structure of the ionosphere for his PhD research (Chap. 7), and it was Pawsey who first realised that radio images of the sky could be made from measurements of radio interference. Since these observations are made in the aperture plane and not the image plane, this is referred to as “indirect imaging”. When electromagnetic waves from the same source combine, they can either reinforce or cancel depending on the path difference. This makes the classical beating interference patterns often referred to as “fringes”. The first interference patterns in the radio were seen by Hertz between 1886 and 1889 during the course of his experiments to prove that the radio waves he had detected had the interference properties predicted by Maxwell’s electromagnetic theory (Pierce, 1910).
Publisher
Springer International Publishing
Reference68 articles.
1. Beevers, C. A., & Lipson, H. (1936). A numerical method for two-dimensional Fourier synthesis. Nature, 137(3472), 825–826.
2. Beevers, C. A., & Lipson, H. (1985). A brief history of Fourier methods in crystal-structure determination. Australian Journal of Physics, 38(3), 263–272.
3. Blythe, J. H. (1957). A new type of pencil beam aerial for radio astronomy. Monthly Notices of the Royal Astronomical Society, 117(6), 644–651.
4. Bolton, J. G., Stanley, G. J., & Slee, O. B. (1949). Positions of three discrete sources of Galactic radio-frequency radiation. Nature, 164(4159), 101–102.
5. Born, M., & Wolf, E. (1959). Principles of optics electromagnetic theory of propagation, interference and diffraction of light. Pergamon Press.