Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental confirmation of the negentropic character of the
  diffraction polarization of diffuse radiation   In the course of analyzing the axiomatic principles on which statistical
physics is based, the assumption of the limited correctness of the postulate
that all allowable microstates of a closed system are equally probable was
checked. This article reports the results of a study of a quasi-equivalent
system within which isotropic radiation interacts with a phase diffraction
grating. A simulated computer model of such interaction showed that anisotropic
polarization must arise in the diffracted radiation, which reduces the
Boltzmann entropy of the entire system and allows an external observer to
obtain information on the grating's surface topology. This prediction was
confirmed when it was experimentally checked directly on actual apparatus.

36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph