To try everything Brilliant has to offer—free—for a full 30 days, visit . You’ll also get 20% off an annual premium subscription. I don't give a flux T-shirt What exactly is a tensor? Chapters: 00:00 What exactly are Tensors? 01:23 Analysing conductivity in anisotropic crystals 03:31 Is conductivity a vector? (hint: nope) 05:00 The key idea to understand Tensors 07:07 Rotating the co-ordinate axes (climax) 10:48 Why are Tensors written in matrix form 11:50 Conductivity is a rank-2 Tensor 14:14 Rank-2 Tensors in Engineering & Astronomy 17:48 Rank-3 & Rank 4 Tensors in material science 20:29 The most intuitive definition of Tensors This video is sponsored by