Numberphile's explanation of Quaternions is the simplest I have seen so far: https://www.youtube.com/watch?v=3BR8tK-LuB0 https://www.youtube.com/watch?v=3BR8tK

Numberphile's explanation of Quaternions is the simplest I have seen so far: https://www.youtube.com/watch?v=3BR8tK-LuB0 https://www.youtube.com/watch?v=3BR8tK-LuB0 Quaternions are very important to know if you are doing any kind of 3D math. For instance, game programming or SLAM for robotics.