A Brief History Of Time: Journal Entry 4

Chapter 4 (Pg 55-63) In this chapter, Hawking starts to talk about the uncertainty principle created Werner Heisenberg. The uncertainty principle, as also stated in Wikipedia, is any variety of mathematical inequalities asserting a fundamental limit to the precision with which certain pairs of physical properties of a particle known as complementary varibales, such as position x and momemtum p, can be known simultaneously. I also read about Max Planck's Quantum Hypothesis. It's the theory that explains how light behaves as if it was composed of particles that can be emitted or absorbed in only packets or quanta, and interference between particles. I read about quantum mechanics (not in full detail though), the sum over histories, and a nice way of seeing the wave/particle duality.