AQA A Level Physics复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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 ...
AQA A Level Physics复习笔记3.3.3 Young's Double-Slit Experiment
Double Slit Interference Two Source Interference For two-source interference fringes to be observed, the sources of the wave must be: Coherent (constant phase difference) Monochromatic (sing...
AQA A Level Physics复习笔记3.3.2 Demonstrating Interference
Interference & Diffraction of a Laser Interference and diffraction of lasers can be demonstrated with slits or diffraction gratings For light rays, such as a laser light through two slit...
AQA A Level Physics复习笔记3.2.4 Required Practical: Investigating Stationary Waves
Required Practical: Investigating Stationary Waves Aims of the Experiment The overall aim of the experiment is to measure how the frequency of the first harmonic is affected by changing one ...
