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...
2023年英才计划重大调整，全国新增24所实施高校！学生怎样才能申请英才计划？
关注科研的国内家长应该对“英才计划”并不陌生。入选“英才计划”，不仅能让学生近距离接触前沿的科学研究，还有机会晋级世界规模最大的科研赛事——ISEF国际科学与工程大奖赛！6月22日，“英才计划”正式宣布了2023年新...
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 ...
AQA A Level Physics复习笔记2.2.7 Collaborative Efforts in Particle Physics
Collaborative Efforts in Particle Physics The field of particle physics is constantly changing and as time goes on, our knowledge and understanding of the nature of particles changes too Par...
AQA A Level Physics复习笔记2.2.6 Strange Quarks
Strange Particles Strange particles are particles that include a strange or anti-strange quark An example of these are kaons Strange particles always: Are produced through the strong interac...
AQA A Level Physics复习笔记2.2.5 Quarks & Antiquarks
Properties of Quarks & Antiquarks Quarks The three most common flavours of quarks are: up, down and strange The majority of hadrons are made up of different combinations of these quarks ...
AQA A Level Physics复习笔记2.2.4 Leptons
Leptons & Antileptons Leptons are a group of fundamental (elementary) particles This means they are not made up of any other particles (no quarks) Leptons interact with other part...
