Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design and experimental study of Tesla's thermomagnetic engine   The scientists have shown great interest in the search for alternative means
to generate energy, which are not contaminants and generate significant damage
to the environment. One of the quite viable possibilities for this is to
consider the construction of thermomagnetic motors, using mainly ferromagnetic
materials. These materials are those that for a given temperature value; these
lose the magnetic properties they have, that is, to be paramagnetic they become
completely diamagnetic during a certain period of exposure to heat.
  With the objective of demonstrate the Curie's law applied to this type of
materials, we designed the model of an engine that works based on this law, to
achieve this the tests of the running system were taken, which were filmed and
then analyzed using the program Tracker Video Analysis and Modeling Tool for
Physics Education.
  In this paper, we present the results related to the magnetic and
thermodynamic study of the efficiency of a motor designed by us, with the aim
of showing the validation of Curie's law for iron and also being able to obtain
the representative characteristics of this material such as magnetization and
the Curie's constant using an experimental method.

26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org