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Haloes Forecast Storms
Beginning of essay
NEWSCIENCE
If you know where and when to look, you can treat yourself to a colourful
display of atmospheric haloes, spots and pillars. These images can tell
you something about the clouds overhead and possible changes in the
weather.
All of these images are created by light shining through cirro ....
Middle of essay
....). These bright spots on either side
of the sun, outside of the halo, occur when sunlight passes through the
sides of capped columns, bullets and plate crystals, when these crystals
are arranged with their sides vertical. The crystals wobble, diffusing
and smearing the colours of the mock sun.
You can see haloes and mock suns more clearly if you block out your view
of the real sun by holding your hand in front of it at arm's length.
Another spectactular optical effect is the solar pillar. Thi.... |
| Number of words: 520 |
Approximate pages: 2 |
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