Why put anti reflective (AR) coatings on watches?!

Wherein Dr. Know-it-all reflects on the value of anti-reflective, or AR, coatings on watch crystals. What are the origins of AR coatings? How do they work? Why are they useful? And why might you -not- want AR coatings on your watch crystal? All of this and more is covered in this video.

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Видео Why put anti reflective (AR) coatings on watches?! канала Dr. Know-it-all Knows it all