Quantum Physics

CHAPTER16

The Fundamental Interactions

In This Chapter

• The full scale of the universe, from the very small to the very big
• The most basic interactions and how they compare
• The quest to unify the fundamental forces

Nature presents us with the macroscopic world, everything we see about us on Earth, but also everything above us, in our solar system and beyond. As we have seen in earlier chapters, nature also presents us with microscopic entities such as atoms, which are made of nuclei and electrons. Nuclei are themselves composed of protons and neutrons. But is this the end of the line? Are protons and neutrons fundamental particles? And what ...