Edexcel IGCSE Physics: Double Science 复习笔记：7.2.2 Half-Life
Edexcel IGCSE Physics: Double Science 复习笔记：7.2.2 Half-Life Half-Life It is impossible to know when a particular unstable nucleus will decay But the rate at which the activity of a sampl...
Edexcel IGCSE Physics: Double Science 复习笔记：7.2.1 Activity & Decay
Edexcel IGCSE Physics: Double Science 复习笔记：7.2.1 Activity & Decay Activity and Decay Objects containing radioactive nuclei are called sources of radiation Sources of radiation decay...
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.6 Detecting Radiation
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.6 Detecting Radiation Detecting Radiation It is important to regulate the exposure of humans to radiation The amount of radiation received...
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.5 Decay Equations
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.5 Decay Equations Decay Equations Radioactive decay events can be shown using a decay equation A decay equation is similar to a che...
Edexcel A Level Maths: Statistics:复习笔记4.1.1 Discrete Probability Distributions
Discrete Random Variables What is a discrete random variable? A random variable is a variable whose value depends on the outcome of a random event The value of the random variable is not known unti...
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.4 Core Practical: Investigating Radiation
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.4 Core Practical: Investigating Radiation Core Practical 13: Investigating Radiation Aim of the Experiment The aim of this experiment is ...
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.3 Types of Radiation
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.3 Types of Radiation Types of Radiation Unstable Nuclei and Radiation Some atomic nuclei are unstable This is because of an imbalance in t...
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.2 Isotopes
Edexcel IGCSE Physics: Double Science 复习笔记：7.1.2 Isotopes Isotopes Although the number of protons in a particular element is always the same, the number of neutrons can be different Iso...
Edexcel A Level Maths: Statistics:复习笔记3.2.4 Probability Formulae
Probability Formulae What is meant by probability formulae? If you have seen any of the other Revision Notes on probability, almost every one contains a formula These however are often disguised in...
