AQA A Level Physics復(fù)習(xí)筆記3.4.1 Single Slit Diffraction
Diffraction Diffraction is the?spreading out?of waves when they pass an obstruction This obstruction is typically a narrow slit known as an aperture The extent of diffraction depends ...
AQA A Level Physics復(fù)習(xí)筆記3.3.1 Path Difference & Coherence
Path Difference & Coherence Interference occurs when waves?overlap?and their resultant displacement is the?sum of the displacement of each wave This result is based on the principle of s...
AQA A Level Physics復(fù)習(xí)筆記3.2.1 Stationary Waves
Stationary Waves Standing waves?are produced by the?superposition?of two waves of the same?frequency?and?amplitude?travelling in?opposite directions This is usually achieved by a travelling ...
AQA A Level Physics復(fù)習(xí)筆記3.1.1 Progressive Waves
Properties of Oscillations A progressive wave is defined as: A wave that transfers energy from one point to another without transferring the medium itself Properties of a Progressive Wave Di...
AQA A Level Physics復(fù)習(xí)筆記3.5.3 Fibre Optics
Fibre Optics Fibre optics utilise the phenomenon of total internal reflection to send high speed light signals over large distances These have many important uses, including: Communications,...
AQA A Level Physics復(fù)習(xí)筆記3.5.2 Snell's Law
Snell's Law Snell’s law relates the angle of incidence to the angle of refraction, it is given by: n1?sin?θ1?=?n2?sin?θ2 Where: n1?= the refractive index of material 1 n2?= the refractive in...
AQA A Level Physics復(fù)習(xí)筆記3.4.2 The Diffraction Grating
The Diffraction Grating A diffraction grating is a plate on which there is a?very large?number of parallel, identical, close-spaced slits When monochromatic light is incident on a grating, a...
AQA A Level Physics復(fù)習(xí)筆記3.3.5 Required Practical: Young's Slit Experiment & Diffraction Gratings
Required Practical: Young's Slit Experiment & Diffraction Gratings Equipment List Resolution?of measuring equipment: Metre ruler = 1 mm Vernier Callipers = 0.01 mm Young’s Double-...
AQA A Level Physics復(fù)習(xí)筆記3.3.4 Developing Theories of EM Radiation
Developing Theories of EM Radiation Isaac Newton (1672) Newton proposed that visible light is a stream of microscopic particles called?corpuscles However, these corpuscles could not explain ...
