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Quizzical Pursuit
—The Architecture Puzzler
Created by Dave Guadagni
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Architecture Puzzler #354
Steel heated to about 752 degrees Farenheit (400 degrees Celsius) turns a red that is visible in the dark. At 975 degrees Farenheit (524 degrees Celsius), the same steel would glow visibly during the daylight. At what temperature would the steel turn white with heat?
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Question from Last Week:
Architecture Puzzler #353
About how much land in the United States is covered with impervious surfaces (buildings, paving, etc.), and about how much is covered in non-agricultural grass (lawns, golf courses, etc.)? Answer in units of square miles (or square kilometers).
Answer to Puzzler #353
Come back next week for the answer to Architecture Puzzler #354!
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http://www.ArchitectureWeek.com/quiz.html
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Dave Guadagni, AIA, is an architect with Robertson/Sherwood/Architects
Quizzical Pursuit is Copyright 2007, Dave Guadagni.
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Molten steel radiates brightly.
Photo: Liz Jones
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