Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fundamental Science and Improvement of the Quality of Life---Space
  Quantization to MRI   How the fundamental and purely quantum mechanical concept of space
quantization and intrinsic spin led to totally unanticipated practical
improvements to the Quality of Life such as Magnetic Resonance Imaging, atomic
clocks, etc. This is just one example of the importance of discoveries in
fundamental science that are necessary in order achieve future progress via
revolutionary practical applications which improve the quality of life. The
importance educating the general populace with a broad knowledge of science is
emphasized, as well as the need for specialized education for future
scientists.

30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat