Light N Matter

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Welcome to the LightNmatter home page. Here you will find a series of short videos exploring various physical concepts, with many hands on demonstrations and experiments. Through those videos I will take you take you in a tour which explores the physical world and tell the story of how we get to know what we know. Most of the content will be accessible to a middle school student and hopefully useful to anyone have an interest to learn and curiosity to learn the world around them, young and old. Please subscribe to the lightNmatter YouTube channel so that you will get a notice when a new video is posted.

Lets begin the tour!

• An intuitive introduction to light: Geometrical optics

  • Reflection refraction and dispersion

  • Newton's Opticks, more on dispersion and colors,

  • Formation of rainbows

  • Total internal reflection and light guides

  • Formation of images, optical instruments

• Speed of light

  • Greeks to Galileo and Romer - moons of Jupiter

  • Fizeau's measurement and a desktop measurement of light

• What is light:

  • Newtons corpuscular theory of light

  • Wave motions

  • Wave theory of light - interference, diffraction and Doppler effect.

  • Electromagnetic theory

    • Electricity and magnetism and Maxwell's Electromagnetic waves

    • Hertz discovery of Electromagnetic waves.

• Thermal radiation:

  • Picket's experiment and early ides

  • Kirchhoff laws

• Viewing a spectrum

  • Forming spectra with prisms and gratings, spectroscopes

  • Emission and Absorption spectra

• Discovering the electron

  • From electrical discharges to Thompson's discovery

  • Measuring the electron photoelectric effect Zeman effect and the Millikan experiment

• Quantum theory,Light as a particle and a wave :

  • photoelectric effect, photons

  • Thermal radiation and atoms

  • principals of quantum theory

  • superposition, uncertainty and measurements