Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.5 Dangers of Radiation Dangers of Radiation Ionising radiation can damage human cells and tissues If the atoms that make up a DNA strand are ionised then t...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.4 Contamination & Irradiation Contamination & Irradiation Contamination Contamination is defined as: The unwanted presence of materials cont...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.3 Uses of Radioactivity Uses of Radioactivity Radiation is used in a number of different ways: Medical procedures including diagnosis and treatment of canc...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 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 sample decreases can b...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.2.1 Activity & Decay Activity and Decay Objects containing radioactive nuclei are called?sources?of radiation Sources of radiation decay at different?rat...
普遍印象中，英國(guó)學(xué)生學(xué)GCSE，國(guó)際生就學(xué)IGCSE，但這兩個(gè)課程具體的區(qū)別是什么呢？ GCSE全稱General Certificate of Secondary Education，中等教育普通證書(shū)，針對(duì)13-15歲學(xué)生，通常用兩年學(xué)習(xí)8-12門課程。 IGCSE...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.6 Detecting Radiation Detecting Radiation It is important to regulate the exposure of humans to radiation The amount of radiation received by a person is c...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.5 Decay Equations Decay Equations Radioactive decay events can be shown using a?decay equation A decay equation is similar to a chemical reaction equation ...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 7.1.4 Core Practical: Investigating Radiation Core Practical 13: Investigating Radiation Aim of the Experiment ?The aim of this experiment is to investigate th...
