AQA A Level Physics复习笔记8.2.1 Radioactive Decay
Radioactive Decay Radioactive decay is defined as: The spontaneous disintegration of a nucleus to form a more stable nucleus, resulting in the emission of an alpha, beta or gamma particle Ra...
AQA A Level Physics复习笔记8.1.7 Required Practical: Inverse Square-Law for Gamma Radiation
Required Practical: Inverse Square-Law for Gamma Radiation Aim of the Experiment The aim of this experiment is to verify the inverse square law for gamma radiation of a known gamma-emitting ...
AQA A Level Physics复习笔记8.1.6 Radiation Safety
Safe Handling of Radioactive Sources It is very well known that radioactive sources are dangerous if handled improperly When choosing a source to work with, the following characteristics are...
AQA A Level Physics复习笔记8.1.5 Background Radiation
Background Radiation Background radiation describes the low level of radiation present in the surroundings at all times There are two types of sources of background radiation: Natural source...
AQA A Level Physics复习笔记8.1.4 Inverse-Square Law of Gamma Radiation
Inverse-Square Law of Gamma Radiation As an electromagnetic wave, gamma radiation shares many of the same wave properties as light Light sources which are further away appear fainter because...
AQA A Level Physics复习笔记8.1.3 Alpha, Beta & Gamma Radiation
Alpha, Beta & Gamma Radiation Alpha Particles Alpha (α) particles are high energy particles made up of 2 protons and 2 neutrons (the same as a helium nucleus) They are usually emitted fr...
AQA A Level Physics复习笔记8.1.2 Changing Models of the Nucleus
Changing Models of the Nucleus John Dalton’s Model (1803) Dalton imagined that all matter was made of tiny solid particles called atoms Dalton’s model proposed: Atoms are the smallest consti...
AQA A Level Physics复习笔记8.1.1 Rutherford Scattering
Rutherford Scattering Evidence for the structure of the atom was discovered by Ernest Rutherford in the beginning of the 20th century from the study of α-particle scattering The experimental...
AQA A Level Physics复习笔记7.10.5 Transformer Inefficiencies
Inefficiencies in a Transformer Inefficiencies in a transformer appear not from just the core, but also in the wires The coils of wire have resistance This causes heat energy to be lost from...
