Abstract
Raytracing in a non-symmetric atmosphere is discussed and illustrated by new simulations of both historical and mythical observations, such as the Novaya Zemlya phenomenon seen by the Dutch in 1597 and Nansen’s sighting of it in 1894. An alternative interpretation is given of the mythical hafstramb monster in the Greenland Sea. Recent photographic material that shows mirages of the water surface is analyzed and a simulation presented. Raytracing techniques are reviewed and it is shown that numerical integration by distance is much preferred over other choices of the integration parameter.
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