How to Build Escher's Impossible Waterfall



Remember the video of the impossible waterfall? Even after you saw how it was done, you were still impressed. Now Instructables has step-by-step instructions for you to make your own 3D version of the famous illusion! It's not exactly simple, but it can be done. And if you can pull it off, you'll flummox everyone who sees it. Link -via Boing Boing

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from http://www.measuringworth.com

Current data is only available till 2009. In 2009, the relative worth of $20.00 from 1920 is:
$214.00 using the Consumer Price Index
$171.00 using the GDP deflator
$731.00 using the unskilled wage
$970.00 using the Production Worker Compensation
$1,120.00 using the nominal GDP per capita
$3,230.00 using the relative share of GDP
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oops, 19 century :)

Current data is only available till 2009. In 2009, the relative worth of $20.00 from 1820 is:
$378.00 using the Consumer Price Index
$450.00 using the GDP deflator
$5,120.00 using the unskilled wage
$11,900.00 using the Production Worker Compensation
$12,700.00 using the nominal GDP per capita
$406,000.00 using the relative share of GDP

Data for consumer bundle only starts in 1900.
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oops, 19 century :) a correction, if the duplicate comment thingie would let me.

Current data is only available till 2009. In 2009, the relative worth of $20.00 from 1820 is:
$378.00 using the Consumer Price Index
$450.00 using the GDP deflator
$5,120.00 using the unskilled wage
$11,900.00 using the Production Worker Compensation
$12,700.00 using the nominal GDP per capita
$406,000.00 using the relative share of GDP

Data for consumer bundle only starts in 1900.
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