Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Le coup d'oeil du scarab\'ee : Charles Nordmann, ou pourquoi la guerre
  est l'affaire des savants   This paper discusses the wartime activities of the astronomer Charles
Nordmann from the Paris Observatory. Nordmann was briefly mobilized in 1914
before starting to work on sound-ranging. He also wrote a witness account of
the war as well as a monthly scientific chronicle in the influential Revue des
Deux Mondes. We argue that his work can be interpretation as the conscious
demonstration that war was the business of scientists.

27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
3
The categories of this paper are: physics
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The categories of this paper are: adap-org