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date: 03 December 2022

mirage, 

Source:
The Oxford Companion to Ships and the Sea
Author(s):
M. V. AngelM. V. Angel

a natural optical illusion caused both at sea and on land by the refraction of light passing through layers of air of different densities. These are usually caused by temperature differences, but can be because the layers of air contain different amounts of water vapour. Particularly in tropical seas, heat hazes often result in the appearance, above the ... ...

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