# The best dimensions for the Joe Cell

If you try to build a Joe Cell, then think about the Golden Ratio, 1.618033988749895 and it’s multiples. Our solar system has a similar configuration, certain orbital periods are closely related to phi.

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&nbsp; Mercury
</td>

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&nbsp; Venus
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&nbsp; Earth
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&nbsp;Jupiter
</td>

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&nbsp; Saturn
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``````
``````<td align="center">
-3
</td>

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-1
</td>

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</td>

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5
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7
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``````
``````<td align="center">
0.24
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0.62
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1.0
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11.1
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29.0
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``````
``````<td align="center">
0.24
</td>

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0.62
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1.0
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11.9
</td>

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29.5
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``````
 Power of Phi Decimal Result Actual Period

Therefore if you choose the diameter of the cylinders try to align them as close as possible to this numbers:

1.0

1.618033988749895

2.618033988749895 *

4.23606797749979

6.854101966249686

11.090169943749476

17.944271909999163

29.03444185374864

46.978713763747805

76.01315561749645

122.99186938124426

199.0050249987407

• Note: Don’t start with a center tube less than 2 inch.