List the main uses of lasers.

Lasers are used:
1) for communication;
2) in medicine;
3) to record information;
4) in laboratories for scientific research, for example, to study new chemical reactions;
5) in holography for obtaining volumetric images;
6) in technological processes (welding, melting, metal cutting);
7) for the implementation of thermonuclear fusion;
8) in spectroscopy to observe the spectra of individual atoms.

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