Abstract
The eclipsing cataclysmic variables provide a unique opportunity for the observational testing of accretion disk theory. Cataclysmic variables (CVs) are close binary systems which consist of an accreting white dwarf primary, and a late-type secondary star that fills its Roche-lobe. The accretion disk around the white dwarf is fed by a gas stream which emerges from the secondary star near the inner Lagrangian point. A compact bright region is frequently present where the stream injects fresh material into the accretion disk. In most cases the disk is the dominant source of light in the system, and the luminosity of the secondary star is comparatively small. Eclipses by the secondary star thus act as precise probes of the spatial structure of the accretion flow.
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