Five questions on lesson 8 of The history of the brilliant. The questions and the answers to pick from come in a new order every time you start.
Pick an answer, and the question marks itself. For a question that you answer in your own words, think of your answer first. Then show our answer and say whether you had it. Nothing is saved or sent.
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Question 1: Name two things today's ray tracing does that Tolkowsky's method couldn't.
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Any two of: works in 3D, not in a slice; sends light from many directions; follows rays through many reflections (up to 12); tilts the stone.
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Question 2: Which three changes does DG-Miliano make to the Tolkowsky plan?
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A shallower crown (32.0°), a three-tier pavilion with lower mains (38.3°), and a 96-facet girdle.
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Question 3: DG-Miliano leads the T73 by 18 points in scintillation. Why should you read that number differently from its brilliance and fire?
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The Wheel counts scintillation from the facets (177 against 73), but it traces brilliance and fire. The traced gains are +2 and +4.
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Question 4: On which Wheel row does DG-Miliano trail the T73?
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b: Tilt, 90 against 92.
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Question 5: In the course table, which single step gave the largest rise in brilliance, and what technology was behind it?
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Old mine to old European: 59 → 90, the bruting machine.
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