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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(fù)習(xí)筆記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復(fù)習(xí)筆記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...
AQA A Level Physics復(fù)習(xí)筆記2.1.4 Alpha & Beta Decay
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(fù)習(xí)筆記2.1.3 Strong Nuclear Force
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(fù)習(xí)筆記2.1.2 Nucleon & Proton Number
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...
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今年英國大考烏龍不少，開考不久后，英國某考試局承認(rèn)在GCSE物理試卷中存在重大錯(cuò)誤。 01.出題錯(cuò)誤的題目，所有學(xué)生都可獲得滿分 在6月9日星期四舉行的GCSE物理高級(jí)卷Paper 1中，包含了一個(gè)關(guān)于電路的問題，然而...
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了解IBDP課程的同學(xué)和家長應(yīng)該知道IB在選課上有六個(gè)大方向，音樂就是包含在Group 6 — The Arts中的一個(gè)選項(xiàng)。在官方的選課規(guī)則里，Group 6是可以用Group 2, Group 3或Group 4來替換的，在學(xué)生不想學(xué)習(xí)藝術(shù)有關(guān)的...
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GCSE或者IGCSE科目眾多，Edexcel GCSE提供52門考試，IGCSE有近43門考試；CAIE考試局的IGCSE有70余門考試。GCSE和IGCSE各科目難易程度怎么樣？ 不論是英國本土還是國內(nèi)的國際學(xué)校，一般會(huì)要求學(xué)生在GCSE/IGCSE階段...
