Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ohm's Law in General Relativity and Coriolis Force Effects in Rotating
  Conductors   It has been shown that a magnetic field proportional to angular velocity of
rotation $\omega$ arises around a rotating conductor with the radial gradient
of temperature $\nabla_r T$. However, the theoretical value of the
proportionality coefficient $10^{-17} {\rm cm}^{5/2}\cdot {\rm g}^{1/2}\cdot
{\rm deg}^{-1}$ does not coincide with the experimental one $10^{-8} {\rm
cm}^{5/2}\cdot {\rm g}^{1/2}\cdot {\rm deg}^{-1}$ [1]. At least two additional
mechanisms act to produce an observable magnetic field in the experiment [1].
First, the fact that the rotation of the conductor is slowed down and second,
the nonstationarity of the temperature gradient during the measurements
contribute to the vertical magnetic field. The value of the magnetic flux
arising from the azimuthal current induced by the ``Coriolis force'' effect on
the thermoelectric radial current, is in good agreement with the experimental
data [1].

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The categories of this paper are: bayes-an
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin