by Dave Walker, UK
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Figure 2: Gabbro thin rock section. Objective 3.5x.
Rotated between crossed polarisation filters. In this type of animation, the
mineral grains rotate and less easy to follow the changes. Fig.
2a is a better approach.
(12 jpeg images, each 46kbytes, at 30° rotation intervals of the stage with crossed polarisation filters set)
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