Waves & Optics
Diffraction: Single Slit, Diffraction Gratings & dsinθ = nλ Explained
Have you ever noticed how you can hear someone talking around a corner before you can see them? That’s diffraction…
Waves & Optics
Electromagnetism
Electromagnetic Waves: Speed, Spectrum & Wave Properties
Look up at the sky on a clear night and the light reaching your eyes has been traveling for years,…
Waves & Optics
Interference of Waves: Constructive, Destructive & Superposition Explained
When two waves meet at the same point in space, they do not bounce off each other like billiard balls.…
Waves & Optics
Standing Waves & Resonance: Nodes, Antinodes & Harmonics Explained
Standing waves resonance is one of the most fundamental yet fascinating phenomena in all of wave physics, and once you…
Waves & Optics
Polarisation of Light: Malus’s Law I = I₀cos²θ & Applications
Polarisation of light is the property that describes the direction in which a light wave vibrates, and it is one…
Waves & Optics
Snell’s Law: n₁sinθ₁ = n₂sinθ₂, Derivation & Total Internal Reflection
Look at a straw standing in a glass of water and it appears to snap sideways right where it meets…
Waves & Optics
Wave Superposition: Adding Waves, Phase & Interference Patterns
Drop two pebbles into a still pond at the same time and watch what happens where the ripples meet. The…
Thermodynamics
Boyle’s, Charles’ & Gay-Lussac’s Gas Laws: Formulas & Examples
Push down on a bicycle pump and you feel the air push back harder the further you compress it. Leave…
Thermodynamics
Thermal Energy & Internal Energy: Heat, Temperature & Q = mcΔT
Touch a hot stove and you feel pain instantly. Hold an ice cube and your fingers go numb within seconds.…
Thermodynamics
Thermal Expansion: Formula ΔL = αL₀ΔT, Types & Worked Examples
Heat a metal rod and it grows longer. Cool it down and it shrinks back. This everyday behavior is called…