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Particle Physics    Quantum Physics    Waves    Optics    Mechanics    Materials    Electricity    Circular Motion    Simple Harmonic Motion    Thermal Physics    Gravitational Fields    Electric Fields    Capacitors    Magnetic Fields    Electromagnetic Induction    Radioactivity    Nuclear Energy    Discovery of the Electron    Wave-Particle Duality    Special Relativity   


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Progressive Waves

Waves are vibrations that carry energy from one place to another without transferring any material. Waves have multiple behaviours:

  • Reflection
  • Refraction
  • Diffraction

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    Types of Waves

    There are different types of waves: Transverse waves, Longitudinal Waves and Polarised Waves. Different waves are different properties and uses.

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    Superposition occurs when 2 or more waves pass through each other. Constructive interference occurs when 2 waves are in phase with each other and destructive interference occurs when 2 waves are out of phase (antiphase) with each other. Noise cancelling headphones work in the principle of destructive interference.

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    Stationary Waves

    A stationary wave is the superposition of the progressive waves with the same frequence and amplitude, moving in opposite directions. The first harmonic occurs when the string length is half a wavelength whereas the second harmonic occurs when the string length is one wavelength.

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