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翰林嚴選

AQA A Level Physics復習筆記2.2.6 Strange Quarks

2022-07-07

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復習筆記2.2.5 Quarks & Antiquarks

2022-07-07

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復習筆記2.2.4 Leptons

2022-07-07

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復習筆記2.2.3 Mesons

2022-07-07

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復習筆記2.2.2 Baryons

2022-07-07

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復習筆記2.1.5 Particles, Antiparticles & Photons

2022-07-07

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...

AQA A Level Physics復習筆記2.1.4 Alpha & Beta Decay

2022-07-07

α & β Decay Equations Alpha Decay Alpha decay is common in large, unstable nuclei with too many protons The decay involves a nucleus emitting an alpha particle and decaying into a differ...

AQA A Level Physics復習筆記2.1.3 Strong Nuclear Force

2022-07-07

Strong Nuclear Force In the nucleus, there are electrostatic forces between the protons due to their electric charge and gravitational forces due to their mass Comparatively, gravity is a ve...

AQA A Level Physics復習筆記2.1.2 Nucleon & Proton Number

2022-07-07

AZX Notation A nuclide is a group of atoms containing the same number of protons and neutrons For example, 5 atoms of oxygen are all the same nuclide but are 5 separate atoms Atomic s...