PART III – Symmetry in Crystals The most striking examples of symmetry…are crystals. Herman Weyl
Study Period
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Question
Your Observations
Week 5
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What observations can you make about these octahedra of cubic cristobalite, another polymorph of quartz, ‘frozen’ in volcanic glass?
(no more than 50 words) (2 marks)
What is your personal favourite gemstone and what is its space group.
(around 10 words) (2 marks)
Week 6
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Cavansite and vandinite are both oxide minerals, and as their names suggest, contain the element vanadium. Browse the internet and make some observations about their colour? You might even comment on the vanadium co-ordination to oxygen.
(no more than 50 words) (2 marks)
You probably agree with Herman Weyl that crystals can be strikingly beautiful. Describe the external form of your favorite crystal?
(20-30 words) (2 marks)
PART IV –Symmetry and Technology MAY: “Oh! Have the crystals faults like us?”
LECTURER: “Certainly May. Their best virtues are shown in fighting their faults. And some have a great many faults; and some are very naughty crystals indeed.” John Ruskin
Study Period
Focus Image
Question
Your Observations
Week 7
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The Art Tower in Mito, Japan is constructed from face-sharing tetrahedra. Describe an ‘extreme’ example of symmetry in art or architecture that excites you.
(around 50 words) (4 marks)
Complete Learning Log 2 by the end of
Week 7
Write a short, reflective essay, comparing your knowledge of symmetry at the beginning of this MOOC with what you now understand. In this way, articulate your personal exploration of symmetry in the past 7 weeks. (around 200 words)
(4 marks)