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Browsing by Subject "Optical aberrations"

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Demonstrating optical aberrations in the laboratory

Author: Naidoo, Darryl ; Mafusire, C ; Forbes, A Date: Jul 2009 An optical aberration is a distortion of an image as compared to the object due to defects in an optical system Read more
Optical aberrations in a spinning pipe gas lens

Author: Mafusire, C ; Forbes, A ; Michaelis, MM ; Snedden, Glen C Date: Jun 2008 If a heated pipe is rotated about its axis, a density gradient is formed which results in the pipe acting as a graded index lens. In this study the authors revisit the concept of a spinning pipe gas lens and for the first time analyse both ... Read more
Spinning pipe gas lens aberrations along the axis and in the boundary layer

Author: Mafusire, C ; Forbes, A Date: Nov 2013 When the walls of an open-ended horizontal steel pipe are heated before the pipe is rotated along its axis, the exchange of the expelled heated air with the incoming cooler air, sucked in along the axis, results in a medium capable of focusing ... Read more

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Browsing by Subject "Optical aberrations"

Browsing by Subject "Optical aberrations"

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