PPT Slide
Stripe patterns are also seen in clouds. Although the medium
in which these patterns appear as well as the size of these
structures differ from the previous example, the nature of the
pattern and the type of defects which are seen are the same.
What are clouds made of ? Explain why the medium in which
cloud patterns appear is a fluid.
Try to compare the size of such a pattern (the shoreline in the
first picture gives you an idea of this size) to that of the sand
pattern of the previous slide.
Similar patterns are discussed in the subsection of the text
called “Air, water & fire” (page 178, under FLUIDS).