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Category: optics

How is a rainbow formed: primary rainbow formation, white light refracts twice and internally reflected once i a raindrop, making a 2 degree difference in the violet and red components of light. Photo Credit: mdashf.org
  • Courses I developed

How rainbows are created

  • by Invariance, MDASHF i@M
  • Posted on February 25, 2017December 1, 2018
Fermat's Principle of least time: Reflection by Fermat's principle Photo Credit: mdashf.org
  • action principle

Fermat’s Principle, a lecture in optics

  • by Invariance, MDASHF i@M
  • Posted on February 25, 2017December 2, 2018
Spherical aberration @ Plane surface: Spherical aberration due to refraction at plane surface. Photo Credit: mdashf.org
  • Courses I developed

Primary aberration, a lecture in optics.

  • by Invariance, MDASHF i@M
  • Posted on February 23, 2017December 5, 2018
Chromatic Aberration: different wavelength have different focus. The phenomena of aberration corresponds to the deviation caused by higher order corrections to the first order expansion of angular terms, in a geometrical optics situation. Photo Credit: mdashf.org
  • Courses I developed

Aberrations, a lecture in optics.

  • by Invariance, MDASHF i@M
  • Posted on January 25, 2017December 10, 2018
Mirror and Fermat's principle: We can see ourselves in the mirror and take our mirror reflected selfie as a consequence of Fermat's Principle, the topic of discussion of the blog. Photo-credit: weddingwire dot com
  • action principle

Optical Path and Fermat’s Principle.

  • by Invariance, MDASHF i@M
  • Posted on October 10, 2013May 25, 2020

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