In the fourth book in the successful Ponderable series, here is the essential guide to physics, an authoritative reference book and timeline that examines the foundations upon which all scientific knowledge rests. Without physics, everything else- from astronomy to zoology- would be a meaningless conjecture. Follow physics through the ages as great scientists, such as Thales, Galilio, Feynman, and many others, gradually unpick the fabric of the universe to reveal an array of fundmental forces, intangible particles and indestructible energy. Today, physics discoveries made headline news as we confirm the fresh mysteries of the Higg boson, supersymmetry, and dark energy.