AQA A Level Physics复习笔记2.5.4 The de Broglie Wavelength
The de Broglie Wavelength Using ideas based upon the quantum theory and Einstein’s theory of relativity, de Broglie suggested that the momentum (p) of a particle and its associated wavelengt...
AQA A Level Physics复习笔记2.5.3 Wave-Particle Duality
Wave-Particle Duality Light can behave as a particle (i.e. photons) and a wave This phenomenon is called the wave-particle nature of light or wave-particle duality Light interacts with matte...
AQA A Level Physics复习笔记2.5.2 Energy Levels & Photon Emission
Line Spectra & Energy Levels Atomic Energy Levels Electrons in an atom can have only certain specific energies These energies are called electron energy levels They can be represe...
AQA A Level Physics复习笔记2.4.3 The Photoelectric Equation
The Photoelectric Equation Since energy is always conserved, the energy of an incident photon is equal to: The work function + the maximum kinetic energy of the photoelectron The energy with...
AQA A Level Physics复习笔记2.4.2 Threshold Frequency & Work Function
Threshold Frequency The photoelectric effect is the phenomena in which electrons are emitted from the surface of a metal upon the absorption of electromagnetic radiation Electrons removed fr...
AQA A Level Physics复习笔记2.3.5 Application of Conservation Laws
Application of Conservation Laws All particle interactions must obey a set of conservation laws. These are conservation of: Charge, Q Baryon number, B Lepton Number, L Strangeness, S Energy ...
AQA A Level Physics复习笔记2.3.4 Feynman Diagrams
Feynman Diagrams Feynman diagrams are a clear way of representing particle interactions in terms of their incoming and outgoing particles and exchange particles Although there are many varia...
AQA A Level Physics复习笔记2.3.3 The Weak Interaction
The Weak Interaction The weak interaction is responsible for the radioactive decay of atoms The exchange particle that carries this force is the W–, W+ or Z0 boson The type of exchange parti...
AQA A Level Physics复习笔记2.3.2 The Electromagnetic & Strong Force
The Electromagnetic Force The electromagnetic force is only between charged particles The exchange particle that carries this force is the virtual photon, γ Properties of the photon are: It ...
