UNIVERSITY PHYSICS II CHAPTER 27 An introduction to Quantum Mechanics 827. 1 The Heisenberg uncertainty principles Nature is bilateral: particles are waves and waves are particles. The particle aspect carries with it the traditional concepts of position and momentum; The wave aspect carries with it the concepts of wavelength and frequency. Nature places natural limits on the precision of our measurements: some knowledge and information forever is shrouded from our prying eyes.1 §27.1 The Heisenberg uncertainty principles Nature is bilateral: particles are waves and waves are particles.The particle aspect carries with it the traditional concepts of position and momentum; The wave aspect carries with it the concepts of wavelength and frequency. Nature places natural limits on the precision of our measurements; some knowledge and information forever is shrouded from our prying eyes