IB DP Physics: SL复习笔记5.1.2 Drift Speed
Drift Speed In conductors, only negatively charged (delocalised) electrons are allowed to move between atoms In general, an electric current can arise from the flow of either positive or negative p...
IB DP Physics: SL复习笔记5.1.1 Charge & Current
Charge Charge is measured in coulombs (C). One coulomb is defined as: The charge carried by an electric current of one ampere in one second Charge is a scalar quantity Electrons have a negative cha...
IB DP Physics: SL复习笔记4.5.4 Harmonics
Harmonics Stationary waves can have different wave patterns, known as harmonics These depend on the frequency of the vibration and the boundary conditions (i.e. fixed and/or free ends) The harmonic...
IB DP Physics: SL复习笔记4.5.3 Boundary Conditions for Standing Waves
Boundary Conditions Stationary waves can form on strings or in pipes In both cases, progressive waves travel in a medium (i.e. the string or air) and superimpose with their reflections The number o...
IB DP Physics: SL复习笔记4.5.2 Nodes & Antinodes
Nodes & Antinodes A standing wave is made up nodes and antinodes Nodes are locations of zero amplitude and they are separated by half a wavelength (λ/2) Antinodes are locations of maximum ampli...
IB DP Physics: SL复习笔记4.5.1 The Nature of Standing Waves
The Nature of Standing Waves Standing waves are produced by the amplitude travelling in opposite directions This is usually achieved when a travelling wave superimposes its reflection The superposi...
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IB DP Physics: SL复习笔记4.4.7 Double-Slit Equation
Double-Slit Equation Interference Patterns Interference patterns depend on: The coherent light incident on the slits The distance between the slits and the screen where the interference pattern is ...
IB DP Physics: SL复习笔记4.4.6 Interference & Path Difference
Double-Slit Interference Interference occurs whenever two or more waves combine to produce a resultant wave with a new resultant displacement The waves combine according to the principle of superpo...
IB DP Physics: SL复习笔记4.4.5 Single-Slit Diffraction
Single-Slit Diffraction Diffraction is the spreading out of waves when they pass an obstruction This obstruction is typically a narrow slit known as an aperture As waves pass through the aperture, ...
IB DP Physics: SL复习笔记4.4.3 Refraction
Refraction When light crosses the boundary between two media with different optical densities, it refracts At the boundary, the light undergoes a change in direction The change in direction depends...
IB DP Physics: SL复习笔记4.4.2 Reflection
Reflection When light hits a smooth plane surface, most of it gets reflected Very smooth reflective surfaces (e.g. mirrors) are known as specular plane reflectors For these surfaces, the law of ref...
