CCEA
AS 2 Waves, Photons and Astronomy
Explore how waves explain the behaviour of light and sound, and how photons introduce quantum theory and wave–particle duality.
Specification
2.1 Waves
Wave Properties
Transverse and longitudinal waves
4
Polarisation
Evidence for the nature of waves
2
Electromagnetic Waves
Oscillating fields
2
2.2 Refraction
Refraction
Changing direction of a wave
3
Total Internal Reflection
TIR in different mediums
1
Optical Fibres
High-speed digital communication
1
2.3 Lenses
Lenses
Types, power and magnification
5
Images
Formed in lenses
3
2.4 Superposition, Interference and Diffraction
Stationary Waves
Waves that store energy
4
Interference
Interaction of two or more waves
3
The Double Slit
Young's famous experiment
2
(P) Double Slit
Measuring the wavelength of light
3
Diffraction Gratings
Plane transmission gratings
1
(P) Diffraction Grating
Measuring the wavelength of light
3
2.5 Quantum Physics
Quantum Basics
Photons and the electronvolt
3
Photoelectric Effect
Photons interacting with electrons
2
Energy Levels
Emission and absorption spectra
2
X-rays
Imaging with X-rays
4
CAT Scanning
3D image formation
1
2.6 Wave-Particle Duality
de Broglie
Wave-particle duality
2
2.7 Astronomy
The Doppler Effect
Neeeeaaaooooohhhh!
1
Redshift
Wavelength changes in light
1
Hubble's Constant
Measuring the expanding Universe
1
Age of the Universe
Origins and evolution
2