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Arecibo Observatory

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Author Topic: Arecibo Observatory  (Read 115 times)
Jennie McGrath
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« Reply #15 on: August 16, 2007, 11:45:28 pm »

Humanity

^
|
|
| X011011
111111
left: X0111 right: 110111
111011
| 111111
| 110000
v
1110 (binary) = 14 (decimal)
000011 111111 110111 111011 111111 110110 (binary)
= 4,292,853,750 (decimal)



The element in the center represents a human. The element on the left (in the image) indicates the average height of a person: 1764 mm. This corresponds to the horizontally written binary 14 multiplied by the wavelength of the message (126 mm). The element on the right depicts the size of human population in 1974, around 4.2 billion. In this case, the number is oriented horizontally rather than vertically, with the least-significant-digit marker to the upper left in the image.

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