The Michelson interferometer produces interference fringes by splitting a beam of monochromatic ligh

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Mirages
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 Inferior mirages dessert mirages
The inverted image is below the erect one
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Inferior mirages warm air to the ground
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Inferior mirageagainst a hot wall
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Inferior image
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A rule of thumb for inferior mirage format

• If the 1-m temperature is less than 1.7o C (3o F)
  cooler - no mirage.
• If the 1-m temperature is around 2.8o C (5o F)
  cooler - a moderate mirage.
• If the 1-m temperature is greater than 4.4o C (8o
  F) cooler - a strong mirage.

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Superior mirages Arctic mirages
The inverted image is above the erect
one Astronomical objects cannot appear in a
simple superior mirage.
The Flying Dutchman, according to folklore,is a
ghost ship that can never go home, doomed to sail
the oceans forever.
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Fata Morgana
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