Linear Transformations of Data Why are linear transformations of data used? Sometimes data might be very large or very small You can apply a linear transformation to the data to make the values mor...
Ungrouped Data How are frequency tables used for ungrouped data? Frequency tables can be used for ungrouped data when you have lots of the same values within a data set They can be used to collect ...
Mean, Mode, Median What are the mean, mode and median? Mean, median and mode are measures of central tendency They describe where the centre of the data is They are all types of averages In statist...
Edexcel IGCSE Physics 复习笔记 3.2.2 Reflection & Refraction Reflection & Refraction All waves, whether transverse or longitudinal, can be reflected and refracted Reflection occurs w...
Edexcel IGCSE Physics 复习笔记 3.2.1 Light & Sound Waves Light Visible light is a part of the electromagnetic spectrum which means it is a transverse wave This means the direction the li...
Edexcel IGCSE Physics 复习笔记 3.1.7 Dangers of EM Waves Dangers of EM Waves As the frequency of electromagnetic (EM) waves increases, so does the energy Beyond the visible part of the spect...
Edexcel IGCSE Physics 复习笔记 3.1.6 Applications of EM Waves Applications of EM Waves Electromagnetic waves have a variety of uses and applications The main ones are summarised in the table...
Edexcel IGCSE Physics 复习笔记 3.1.5 Electromagnetic (EM) Waves Properties of EM Waves Electromagnetic waves are defined as: Transverse waves that transfer energy from the source of t...
Edexcel IGCSE Physics 复习笔记 3.1.4 The Doppler Effect The Doppler Effect The Doppler Effect is defined as: The apparent change in wavelength and frequency of a wave emitted by a mov...
