Led by James Clerk Maxwell Simulacrum
About this course
Waves are how the universe moves energy and information from place to place. A ripple crosses a pond; sound travels from a loudspeaker to your ear; sunlight crosses a hundred and fifty million kilometres of empty space to warm your face. All of these are wave phenomena, governed by the same small set of equations. This course covers the full AQA treatment of waves — mechanical waves in matter and electromagnetic waves through space — and places lenses, colour, and black body radiation in the same frame.
This course follows AQA specification 8463, section 4.6 in full, including physics-only (triple-science) content on reflection of waves, sound waves, detection and exploration, lenses, visible light and colour, and black body radiation. Six simulacra take the modules in turn. Fourier opens with the basic properties of waves — his decomposition of any periodic waveform into simple sinusoids is the mathematical foundation of all that follows. Huygens takes reflection, sound, and detection — his wave theory of light gives us the construction we still use to reason about wavefronts. Maxwell takes the electromagnetic spectrum — he predicted its existence mathematically in 1865. Herschel takes refraction and the hazards of ionising radiation — he discovered infrared. Fermat takes lenses and visible light — his principle of least time is the cleanest derivation of the laws of optics. Planck closes the course with black body radiation — his explanation opened the quantum era.
Higher-Tier content is flagged inline. Sections 4.6.1.3 (reflection), 4.6.1.4 (sound waves, HT), 4.6.1.5 (detection and exploration, HT), 4.6.2.5 (lenses), 4.6.2.6 (visible light and colour), and all of 4.6.3 (black body radiation) are physics-only and are distributed through the modules as appropriate. Required Practicals 8 (ripple tank and waves in a solid), 9 (reflection and refraction of light), and 10 (infrared absorption and emission) are treated within Modules 1, 2, and 4 respectively.
Led by Joseph Fourier Simulacrum
The question
What is a wave, what does it carry, and what are the four numbers that tell you everything you need to know about any periodic wave?
Outcome
The student can distinguish transverse from longitudinal waves with examples, define amplitude, wavelength, frequency, and period, apply T = 1/f and v = fλ, measure these quantities in a ripple tank, and (physics only) reason about what changes when a wave crosses from one medium to another. (AQA 4.6.1.1, 4.6.1.2)
Led by Christiaan Huygens Simulacrum
The question
What happens when a wave meets a boundary, how does a sound wave become a vibration you hear, and how do we see inside an object with ultrasound?
Outcome
The student can construct ray diagrams for reflection, describe what happens at material boundaries, (HT) describe how sound is converted to mechanical vibration, state the human hearing range, explain ultrasound imaging, and use P- and S-wave properties to reason about the Earth's interior. (AQA 4.6.1.3, 4.6.1.4, 4.6.1.5)
Led by James Clerk Maxwell Simulacrum
The question
Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays — what do all these have in common, and what distinguishes them?
Outcome
The student can name the seven groups of the EM spectrum in order of wavelength or frequency, state that all EM waves are transverse and travel at the same speed through vacuum, identify a practical application for each group, and (Higher Tier) explain why the wavelength makes it suitable for that application. (AQA 4.6.2.1, 4.6.2.4)
Led by William Herschel Simulacrum
The question
When a ray of light passes from air into water it bends — why? And when ultraviolet or X-ray radiation passes through your skin, why is that genuinely dangerous?
Outcome
The student can explain that different wavelengths interact with matter differently, (HT) explain refraction using ray and wavefront diagrams, describe the biological hazards of UV, X-rays, and gamma rays, evaluate risk from quantitative data, and carry out Required Practical 10. (AQA 4.6.2.2, 4.6.2.3)
Led by Pierre de Fermat Simulacrum
The question
How does a lens form an image, and what actually determines the colour you perceive when you look at an object?
Outcome
The student can construct ray diagrams for convex and concave lenses showing real and virtual images, apply the magnification equation, distinguish specular from diffuse reflection, and explain the colour of an opaque object in terms of differential absorption, transmission, and reflection. (AQA 4.6.2.5, 4.6.2.6)
Led by Max Planck Simulacrum
The question
Why does a poker glow red hot, and what does the temperature of the Earth depend on?
Outcome
The student can explain that all bodies emit radiation with intensity and wavelength distribution set by temperature, define a perfect black body, and (Higher Tier) explain how the balance between absorbed and emitted radiation determines the temperature of an object — including the Earth. (AQA 4.6.3.1, 4.6.3.2)