Showing posts with label geography. Show all posts
Showing posts with label geography. Show all posts
30 March 2011

How long is the coast of Maryland?

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Last night's Final Jeopardy clue: "With 301 miles, it has the most coastline of current states that were part of the original 13 c...
1 comment:
22 April 2009

Constrained tourism

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Does there exist a Hamiltonian tour of the graph whose vertices are the 48 contiguous United States and whose edges connect states which bo...
5 comments:
04 April 2009

Which two states are closest together?

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Fix two sets X and Y in the plane, each the interior of a curve, such that their closures don't intersect. How would one go about findi...
13 comments:
09 February 2009

Brian Hayes on the continental divide

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Brian Hayes recently made a fascinating post about determining the location of the Continental Divide . Apparently that's what those pi...
19 October 2007

The chain of cities

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From radical cartography -- a map of Europe with cities that are near each other (within 150 km) and with populations of more than 100,000 ...
31 July 2007

how to break up time and space

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Squaring the hexagon , from Strange Maps . This map illustrates a proposal for dividing France into perfectly rectangular (well, as rectang...
8 comments:
20 July 2007

Harry Potter and the pre-orders

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As I wondered earlier : there are prediction markets in which you can bet on Harry Potter living . NewsFutures puts his probability of livi...
12 July 2007

why Four Corners is in the middle of nowhere

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Mark Chu at ScienceBlogs writes about fractals . The classic example of a fractal is the idea that it is difficult to measure the length of...