windsand34
windsand34
Griffith expander
An exhibit device apparently designed to geometrically show the expansion of (x + y)^3. When you turned the crank, the segments of the cube would spread apart. Evidently long disused by the time I took this picture in the Griffith Observatory basement about 1982.
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Uploaded on May 28, 2011
Taken circa 1982
Griffith expander
An exhibit device apparently designed to geometrically show the expansion of (x + y)^3. When you turned the crank, the segments of the cube would spread apart. Evidently long disused by the time I took this picture in the Griffith Observatory basement about 1982.
226
views
0
faves
2
comments
Uploaded on May 28, 2011
Taken circa 1982