https://www.pearson.com/channels/physics/learn/patrick/vectors/unit-vectors
Unit Vectors Explained: Definition, Examples, Practice & Video Lessons
Master Unit Vectors with free video lessons, step-by-step explanations, practice problems, examples, and FAQs. Learn from expert tutors and get exam-ready!
unit vectorsexplaineddefinitionexamplespractice
https://www.informit.com/articles/article.aspx?p=2854376&seqNum=4
Normalization and Unit Vectors | Essential Mathematics for Graphics (Shader) Programming | InformIT
A refresher of mathematical concepts used in shader programming.
unit vectorsessential mathematicsnormalization