Physics:
Free physics topical resources
The mother of all string theories passes a litmus test that, so far, no other candidate theory of quantum gravity has been able to match.
Free physics topical resources
Free physics topical resources
The golden section: geometrical methods, its occurrence in pentagons, pentagrams and decagons; paper folding, Penrose tilings, trigonometry and Phi. Puzzles and You do the maths..., for schools and teachers or just for recreation!
