Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shape of ammonium chloride dendrite tips at small supersaturation   We report detailed shape measurements of the tips of three-dimensional
ammonium chloride dendrites grown from supersaturated aqueous solution. For
growth at small supersaturation, we compare two different models: parabolic
with a fourth-order correction, and power law. Neither is ideal, but the
fourth-order fit appears to provide the most robust description of both the tip
shape and position for this material. For that fit, the magnitude of the
fourth-order coefficient is about half of the theoretically expected value.

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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: acc-phys