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Deleted 01.curriculum/01.physics-chemistry-biology/01.niv1/06.nature-of-light/01.light-intensity/02.light-intensity-overview/cheatsheet.en.md, 01.curriculum/01.physics-chemistry-biology/01.niv1/06.nature-of-light/01.light-intensity/02.light-intensity-overview/cheatsheet.es.md, 01.curriculum/01.physics-chemistry-biology/01.niv1/06.nature-of-light/01.light-intensity/02.light-intensity-overview/cheatsheet.fr.md files