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No one to date h<strong>as</strong> shown why snowflakes (here we are discussing only <strong>the</strong> formation of plates,<br />
specifically dendritic plates) demonstrate a remarkably precise hexagonal radial symmetry. The<br />
currently accepted expl<strong>an</strong>ation for this is that <strong>as</strong> snowflakes form <strong>the</strong>y travel along unique r<strong>an</strong>dom<br />
paths that expose <strong>the</strong> developing snowflake to micro environmental fluctuations. Crystalization<br />
occurs in response to <strong>the</strong>se local conditions. The nature of water molecules leads to <strong>the</strong> familiar<br />
hexagonal crystals. Thus, <strong>the</strong> unique path taken by a developing snowflake determines its final<br />
configuration. (4)(9)<br />
Ano<strong>the</strong>r possible contributing factor for <strong>the</strong> r<strong>an</strong>domness we see in snowflake formation is <strong>the</strong><br />
presence of a qu<strong>as</strong>i-liquid ph<strong>as</strong>e <strong>as</strong> part of a developing snowflake. (7)<br />
We postulate <strong>an</strong>o<strong>the</strong>r possible expl<strong>an</strong>ation for <strong>the</strong>se guided r<strong>an</strong>dom configurations of<br />
snowflakes; <strong>the</strong> development of <strong>an</strong> emerging pi-obital like electron cloud. This elaborate pi-orbital<br />
develops <strong>as</strong> <strong>the</strong> crystal grows creating sites favored for <strong>the</strong> attachment of <strong>the</strong> next water<br />
molecules. Such pi-orbitals are found in large org<strong>an</strong>ic molecules (i.e. pl<strong>an</strong>ar benzene constructs)<br />
<strong>as</strong> well <strong>as</strong> several pl<strong>an</strong>ar inorg<strong>an</strong>ic crystalline forms. We consider <strong>the</strong> formation of ice pi-orbitals,<br />
much like those of benzene molecules. The individual water (ice) hex plates may each have such a<br />
pi-orbital <strong>an</strong>d <strong>as</strong> <strong>the</strong>y are joined to form a larger plate this orbital exp<strong>an</strong>ds to ‘guide’ <strong>the</strong> future<br />
formation of <strong>the</strong> snowflake.<br />
Regardless of <strong>the</strong> exact cause for <strong>the</strong> observed symmetry, we find it to be guided (following a<br />
symmetric pattern) <strong>an</strong>d r<strong>an</strong>dom (each crystalline growth point may or may not affix a water<br />
molecule or molecular complex.<br />
The physical implications of this model lead us to claim that <strong>the</strong>re are<br />
1.5 × 10 7 hex units in a single radial axis; 3.8 × 10 13 hex units in a complete radial arm (a radial<br />
axis <strong>an</strong>d all sidearms.) There are six radial arms per each snowflake <strong>an</strong>d six water molecules for<br />
each ice hex unit. These figures give us<br />
(3.8 × 10 13 hex units per arm) × (6 arms per snowflake) × (6 H2O per hex unit)<br />
= 1.4 × 10 15 H2O molecules in a model snowflake.<br />
This is b<strong>as</strong>ed upon a two-dimensional model. Actual snowflakes, <strong>as</strong> far <strong>as</strong> <strong>the</strong>y might inform<br />
this model, have thickness. By adding several layers of parallel pl<strong>an</strong>es of ice above <strong>an</strong>d below <strong>the</strong><br />
central pl<strong>an</strong>e of this model, we see that we approach <strong>the</strong> me<strong>as</strong>ured m<strong>as</strong>s of observed snowflakes.<br />
We also appreciate that each added pl<strong>an</strong>e of ice multiples our estimate of possible snowflake<br />
configurations to beyond <strong>the</strong> already predicted <strong>as</strong>tronomical numbers.<br />
Throughout <strong>the</strong> development of this model we’ve <strong>as</strong>sumed that <strong>the</strong>re is <strong>an</strong> equivalence of <strong>the</strong><br />
probability of <strong>an</strong>y possible snowflake configuration. In o<strong>the</strong>r words, <strong>the</strong> probability of <strong>an</strong>y one<br />
snowflake configuration is <strong>the</strong> same <strong>as</strong> <strong>an</strong>y o<strong>the</strong>r snowflake configuration. This may not be a valid<br />
<strong>as</strong>sumption. Indeed, <strong>the</strong>re may be favored snowflake configurations. Thus, <strong>the</strong> final form of <strong>an</strong>y<br />
actual snowflake may not be <strong>the</strong> product of strictly r<strong>an</strong>dom development. If this is true, our<br />
estimate of all possible snowflake configurations is <strong>an</strong> over-estimate of <strong>an</strong>y real qu<strong>an</strong>tity<br />
Photographs show that some real snowflakes are <strong>as</strong>ymmetric. Whe<strong>the</strong>r this <strong>as</strong>ymmetry is<br />
evident while a snowflake develops or induced owing <strong>the</strong> capture processes, symmetry prevails.<br />
We c<strong>an</strong> argue ad nauseum about <strong>the</strong> definition of ‘alike’ or ‘identical.’ We may also accept <strong>the</strong><br />
concept of ‘for all practical purposes.’<br />
SNOWFALL<br />
There are 1.4 × 10 15 H2O molecules or 4.2 × 10 –8 gms of H2O in a model snowflake. If we<br />
approximate <strong>the</strong> average water density of fresh snow to be 12%, this is equivalent to saying that<br />
1.0 cm 3 of snow is equal to 0.12 gms of H2O.<br />
Using <strong>an</strong> estimate of total snowfall over <strong>the</strong> earth’s surface per year of 3.3 × 10 21 cm 3 (see<br />
Appendix A) <strong>an</strong>d our model, we obtain 9.6 × 10 31 model snowflakes produced worldwide each<br />
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