Foundation 6 — Cross Product

Module 1: Mathematical Foundations  ·  Theory  ·  assumes Foundation 5 The second way to multiply two vectors — and the one that gives rotation something to point at. Mahavakya The cross product points somewhere no vector needs to point. We agree on which way — and physics works because we all agree. On this page … Read more

Foundation 5 — Dot Product

Module 1: Mathematical Foundations  ·  Theory  ·  assumes Foundation 4 The first way to multiply two vectors — and the one that turns geometry into energy. Mahavakya The dot product asks one question of two vectors: how much of one lies along the other? Everything else it does follows from that. On this page The … Read more

Foundation 4 — Vector Addition and Resolution

Module 1: Mathematical Foundations  ·  Theory  ·  assumes Foundation 3 Combining vectors, and taking them apart — from geometric construction to arithmetic you can trust under exam pressure. Mahavakya Vectors do not add like numbers, because direction is not a label attached to the quantity — it is part of the quantity itself. On this … Read more

Foundation 3 — Coordinate Systems

Module 1: Mathematical Foundations  ·  Theory  ·  assumes Foundation 2 Mapping space into numbers — and why the grid you choose decides how hard the mathematics will be. Mahavakya A coordinate system is not part of the physical world; it is part of the physicist’s method of seeing it. Good representation does not change nature … Read more

Foundation 2 — Scalars and Vectors

Module 1: Mathematical Foundations  ·  Theory  ·  assumes Foundation 1 The building blocks of physical quantities — why some measurements need a direction and some do not. Mahavakya Every physical quantity carries either magnitude alone or magnitude with direction; this quiet distinction shapes the entire structure of mechanics. On this page The quiet distinction Scalars: … Read more

Foundation 1 — The Language of Physics

Module 1: Mathematical Foundations  ·  Orientation  ·  no prerequisites Why physics reaches for mathematics at all — and what an equation is actually doing when it describes the world. Mahavakya Nature behaves without mathematics; physics uses mathematics to represent the regularities we observe in nature. On this page Describing motion without mathematics Why mathematics becomes … Read more