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Posts Tagged ‘model

“The map is not the territory”*…

 

With the advent of GPS systems and cell-phone-based mapping guidance…

…many of us have stopped paying attention to the world around us because we are too intent on following directions. Some observers worry that this represents a new and dangerous shift in our style of navigation. Scientists since the 1940s have argued we normally possess an internal compass, “a map-like representation within the ‘black box’ of the nervous system,” as geographer Rob Kitchin puts it. It’s how we know where we are in our neighborhoods, our cities, the world.

Is it possible that today’s global positioning systems and smartphones are affecting our basic ability to navigate? Will technology alter forever how we get around?

Most certainly—because it already has. Three thousand years ago, our ancestors began a long experiment in figuring out how they fit into the world, by inventing a bold new tool: the map…

Get your bearings at: “From Ptolemy to GPS, the Brief History of Maps

* Alfred Korzybski

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As we follow the directions, we might recall that it was on this date in 1595 that Johann Kepler (and here) published Mysterium cosmographicum (Mystery of the Cosmos), in which he described an invisible underlying structure determining the six known planets in their orbits.  Kepler thought as a mathematician, devising a structure based on only five convex regular solids; the path of each planet lay on a sphere separated from its neighbors by touching an inscribed polyhedron.

It was an elegant model– and one that fit the orbital data available at the time.  It was, nonetheless, wrong.

Detailed view of Kepler’s inner sphere

source

 

Written by LW

July 9, 2017 at 1:01 am

“The solar system is off center and consequently man is too”*…

 

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On a dry lake bed in Nevada, a group of friends build the first scale model of the solar system with complete planetary orbits: a true illustration of our place in the universe…

* Harlow Shapley, Through Rugged Ways to the Stars

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As we reach for the stars, we might recall that it was on this date in 1988 that NASA launched the space shuttle Discovery, marking America’s resumption of manned space flight following the 1986 Challenger disaster.  It was the first of Discovery‘s two “Return To Flight” assignments; it flew the “twin” missions in 2005 and 2006 that followed the Columbia disaster in 2003.

 source

 

Written by LW

September 29, 2015 at 1:01 am

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