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...
AQA A Level Physics复习笔记2.2.3 Mesons
Pions & The Strong Nuclear Force Pions Pions (π–mesons) can be positive (π+), negative (π–) or neutral (π0) The anti–particle of the positive pion is the negative pion (and vice versa) T...
AQA A Level Physics复习笔记2.2.2 Baryons
Baryon Number The baryon number,?B, is the number of baryons in an interaction B?depends on whether the particle is a baryon, anti-baryon or neither Baryons have a baryon number?B?= +1 Anti-...
AQA A Level Physics复习笔记2.1.5 Particles, Antiparticles & Photons
Antimatter The universe is made up of?matter?particles (protons, neutrons, electrons etc.) All matter particles have antimatter counterparts Antimatter particles are identical to their matte...
