Category: light

  • Young’s double slit experiment

    Young’s double slit experiment

    Optics Series Lecture, Lecture – IX. “Young’s Double Slit Experiment. Coherent Sources and Conditions of Interference” This lecture was delivered on 14th February in a lecture session of 1 and 1/2 hours. This lecture was delivered to Physics elective students. At a later date this was delivered as a lecture to honors students as well. The…

  • Harmonic plane waves

    Harmonic plane waves

    Optics Series Lecture, Lecture – VIII. “Harmonic Plane Waves” This lecture ( 1.5 hours ) was delivered on 13th February 2017 to honors students In our last lecture ( lecture — VII ) we began by discussing what are electromagnetic waves. We also discussed in good detail what are harmonic waves. Harmonic waves are those waves…

  • Interference of two plane harmonic waves

    Interference of two plane harmonic waves

    Optics Series Lecture, Lecture – VII. “Conditions of interference, Interference of two plane harmonic waves.” This lecture was delivered on 7th February in a lecture session of 1 and 1/2 hours. This lecture was delivered to Physics elective students but intended as a lecture towards Honors students at a later date. Electromagnetic Waves. Light is…

  • Matrix formulation in geometrical optics

    Matrix formulation in geometrical optics

    Topics covered in this lecture Ray tracing a. Translation matrix b. Refraction matrix c. System matrix  In this lecture, we will discuss about one of the most interesting and powerful methods in Geometrical Optics. As we have discussed here (https://mdashf.org/2017/02/25/fermats-principle-a-lecture-in-optics/), geometrical optics is that segment of optics in which we are limited to a situation…

  • How rainbows are created

    How rainbows are created

    How Rainbows are created. Optics lecture series – IV “Primary and Secondary rainbows”, a lecture in Optics. This lecture was delivered on February 02, 2017. Sunlight is white in color. Do you know Newton would have greatly disliked this statement, do you know why? “Color is not the property of light” but a property of an…