Viited
- Aatomistruktuur ja -tasemed: https://www.youtube.com/watch?v=uiwRhxoz5sI
- Dioodlaser: https://www.youtube.com/watch?v=_I4fyOtyvPg
- Vähi ravi: https://www.cancerresearchuk.org/about-cancer/treatment/other/laser-treatment
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