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Through the OSA Traveling Lecturer Program, OSA Student Chapters have the opportunity to invite distinguished speakers to their institutions. In this year, as part of the celebration of the year of light, professor Chandra Roychoudhuri from the University of Connecticut will be giving a two-day workshop entitled “Re-visiting Optical Phenomena using Non-Interaction of Waves” on Wednesday 23rd and Friday 25th September.
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The workshop will be divided in four lectures where he will be covering some of the topics presented on his book, “Causal Physics: Photon Model by Non-Interaction of Waves”. In the book, all the basic optical phenomena are revisited by incorporating the universal property that waves by themselves do not interact (interfere) with each other in the absence of interacting material medium. The Superposition Effects (fringes) due to multiple beams of waves or particles, become manifest only as physical transformations in detector arrays; when simultaneously stimulated by all the beams. Thus, measurable Superposition Effects are Causal & Local. This Non-Interaction of Waves, or NIW-property was underscored by the father of wave propagation, Christian Huygens; which is the basis of Huygens’ Principle; which we have been neglecting for over three centuries. This principle eventually evolved into Huygens-Fresnel Diffraction Integral; which is at the core of analyzing almost all optical phenomena. An explicit recognition of the NIW-property removes a large number of prevalent contradictory hypotheses, both in classical and in quantum optics, including wave-particle duality.
Professor Roychoudhuri has a BS and MS in Physics and PhD in Optics from the Institute of Optics, University of Connecticut and currently is a Research Professor in the same institution since 1992. During his career he has worked both in academia (USA, India, Mexico) and in industry (TRW, Perkin Elmer and United technologies).
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The workshop will be divided in four lectures where he will be covering some of the topics presented on his book, “Causal Physics: Photon Model by Non-Interaction of Waves”. In the book, all the basic optical phenomena are revisited by incorporating the universal property that waves by themselves do not interact (interfere) with each other in the absence of interacting material medium. The Superposition Effects (fringes) due to multiple beams of waves or particles, become manifest only as physical transformations in detector arrays; when simultaneously stimulated by all the beams. Thus, measurable Superposition Effects are Causal & Local. This Non-Interaction of Waves, or NIW-property was underscored by the father of wave propagation, Christian Huygens; which is the basis of Huygens’ Principle; which we have been neglecting for over three centuries. This principle eventually evolved into Huygens-Fresnel Diffraction Integral; which is at the core of analyzing almost all optical phenomena. An explicit recognition of the NIW-property removes a large number of prevalent contradictory hypotheses, both in classical and in quantum optics, including wave-particle duality.
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Lecture 1. (Wednesday 23rd – 14:00h – Blue Lecture Room) Why are we ignoring so many conceptual contradictions in explaining optical phenomena?
- Why do we call white light in-coherent and then use white-light-fringes to make most the precise measurements?
- Why do we model causal phenomena of nature using non-causal mathematical signal, Fourier monochromatic modes that exists in all space?
- Why do we orthogonally polarized light do not interfere; but then we generate elliptically polarized light by superposition two orthogonally polarized beams with 90-degrees phase delays?
- Why do we ignore the physical realities of two separate signals that leave from two slits that generate double-slit fringes?
- Why do we assign quantumness to light waves when all photo-electrons are bound quantum mechanically in photoelectron emitting solids? In the first talk, we discuss many such conceptual contradictions prevailing in current optics texts.
Lecture 2. (Wednesday 23rd – 16:00h – Blue Lecture Room) How to resolve the contradictions underscored in the first talk?
In the second talk, we will resolve the contradictions presented in the first talk by simply recognizing the most neglected classical wave property, the Non-Interaction of Waves (NIW). A propagating wave phenomenon is an excitation of a tension field. The tension field restores its local perturbation by pushing it away to the next domain (Huygens’ secondary wavelets) to restore its local state of equilibrium. This tendency is at the root of wave propagation. Perturbation generating source does not provide the velocity to the wave. We will use this NIW-property and a causal model for spectrometry to develop and justify photons as classical wave packets; which propagate by diffractively spreading in space (Huygens-Fresnel diffraction theory).
Lecture 3. (Friday 25th – 11:00h – Seminar Room) Why does scientific thinking repeatedly go through disruptive revolutionary paradigm shifts?
We will use the historical evolution of the concept of interference of light and how we failed to recognize the property, Non-Interaction of Waves, and then develop a methodology of thinking which would be able to overcome disruptive revolutions in physics. The solution is to imagine and visualize, otherwise, invisible interaction processes, which nature carries out repeatedly and reproducibly to sustain its evolutionary changes. We call it Interaction Process Mapping Thinking (IPM-T); which we need to implement, iteratively, over and above the prevailing Measurable Data Modeling Thinking (MDM-T). This is because the evidence-based science, or, the measurable data, cannot extract all the necessary information about the interactants in any interaction.
Lecture 4. (Friday 25th – 14:00h – Seminar Room) Why waste time trying to develop a “better” methodology of thinking? Will it help us understand physics better and become better engineers?
We will present scientific arguments using currently “understood” phenomena that space as a complex tension field is the final frontier for physics and engineering. Old ether, but as a stationary Complex Tension Filed (CTF), represents cosmic space allowing light to travel all across the space. CTF also represents the cosmic inertial reference frame. Interaction process based analysis of gas laser phenomenon (spontaneous and stimulated emissions) implies that there are two distinctly different Doppler Effects. The first is physical frequency shift due to source movement through the CTF. The second is an apparent frequency shift due to detector movement through the CTF. [This is identical to Doppler effects for sound waves in air pressure tension field.] Further, when one applies IPM-T to the Hubble Redshift of the line center of Maxwell-Doppler broadened spectral absorption lines from distant stars, the model of expanding universe needs to be re-developed.
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