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International Journal for Research in Applied Science and Engineering Technology

Reflecting the Double Slit Pattern

Himansh Bainsla

Published Nov 7, 2025• 0 citations
Publisher

Abstract

This research was conducted to note the changes in the interference patterns, by different means of reflection. For this, we have used a double slit, different mirrors, and a screen to obtain the image. The hypothesis behind this was that double slit produces a fringe patten on a screen when a coherent light source is passed through it, but what if we put a mirror after the slits and obtain an image on a screen. Not just that, what if we put different kinds of mirrors in between the slit and the screen. We conducted this research in an environment with negligible sources of light except the non-coherent light source, and with negligible vibrations which could affect the image obtained. When this research was conducted with a flat mirror, fringes were roughly the same as predicted by mathematical calculations. But when this research was conducted by a convex mirror, the fringes seemed to be virtual . When this same study was conducted with a concave mirror, the fringes seemed to be either concentrated at a single point, or they seemed to be have enlarged with a virtual image however the ratio of magnified image to the actual image that have been obtained if there was no mirror, remained the same. Whereas in the case of a convex mirror, the image was smaller. This property is useful as it can be used to observe the pattern more precisely by magnifying it and the actual numbers, i.e.- when mirror would not have been used can also be calculated because the magnification is the same.

DOI
10.22214/ijraset.2025.74981

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Abstract Light waves, which have almost no physical properties, are an abstract mathematical concept rather than an objective description. Confused by a set of dark and bright stripes and a sketchy schematic with little relation to the actual result, the double-slit phenomenon was misjudged as being caused by interfering light waves, but this plausible principle implies disastrous flaws. For example, (1) immediately after light passes through the double-slit device, the pattern is generated early or before interference. By changing the device-screen distance, the pattern only scales synchronously without being reconstructed by interference. The pattern with more interference points is darker, but it should be brighter. (2) Light waves can not only be subdivided into many parts but also greatly proliferate. (3) Light waves with missing leading edges outside the screen can still induce much interference. (4) Reflected light waves do not interfere. (5) The effect of polarization direction on interference should not be ignored. (6) Compared with the mathematical model, the location where the dark stripe should appear is actually the brightest spot. The formation principle of multiple regular dark stripes cannot be found. (7) To reflect the quantum property in the interference process, unless all conditions are simultaneously met, interference will not be triggered, and therefore, the principle of interference will be rejected. (8) A light source cannot be produced in a slit that may be in vacuum. (9) In the causality test, to verify the effect of collapse, the photons that have collapsed into particles should be tested again with a double-slit test. (10) The phenomenon of "observed tampering results" is obtained by observation. Has it been tampered with by observation? (11) If light is a wave, then matter and antimatter are conjoined. In conclusion, Newton's particle model is wrong, as is light wave theory.

•Nov 3, 2021•0 citations
This research was conducted to note the changes in the interference patterns, by different means of reflection. For this, we have used a double slit, different mirrors, and a screen to obtain the image. The hypothesis behind this was that double slit produces a fringe patten on a screen when a coherent light source is passed through it, but what if we put a mirror after the slits and obtain an image on a screen. Not just that, what if we put different kinds of mirrors in between the slit and the screen. We conducted this research in an environment with negligible sources of light except the non-coherent light source, and with negligible vibrations which could affect the image obtained. When this research was conducted with a flat mirror, fringes were roughly the same as predicted by mathematical calculations. But when this research was conducted by a convex mirror, the fringes seemed to be virtual . When this same study was conducted with a concave mirror, the fringes seemed to be either concentrated at a single point, or they seemed to be have enlarged with a virtual image however the ratio of magnified image to the actual image that have been obtained if there was no mirror, remained the same. Whereas in the case of a convex mirror, the image was smaller. This property is useful as it can be used to observe the pattern more precisely by magnifying it and the actual numbers, i.e.- when mirror would not have been used can also be calculated because the magnification is the same.
3.1 Interference of a Single Photon The kinds of study originally conducted by Thomas Young - in particular, the celebrated "double slit" experiment that we briefly examined in Chapter 1 (see Fig. 1) - provide a capacity to reveal far more than the wave nature of light, important as that is. True enough, the observed characteristic fringe pattern, when monochromatic light passes through two closely spaced slits onto a screen, appears to be simply explicable on the basis of waves from each slit undergoing constructive and destructive interference at different positions on the screen. Yet, astonishingly, these patterns of interference are still exhibited when individual photons of a low-intensity input beam reach the screen one at a time, showing that it cannot in fact be a matter of different photons having to interfere with each other. Indeed, Dirac enunciated the general principle that photons can never directly interact with each other. The double slit and other such experiments indicate that each photon interacts in a delocalized, wave-like manner with both slits at the same time. Successive experiments build interference patterns that conform to an exact mathematical distribution formula, but the position at which an individual photon is detected in any particular instance cannot be predicted; this is a quintessential illustration of quantum uncertainty. Using the path integral approach of quantum theory, the phenomenon is more accurately represented by introducing a summation over all possible routes between the source and the screen on which the pattern appears, signifying an entire "lifetime" for each photon involved in the experiment. This relates to the fact that the actual trajectory is unknown without an observation, and thus we only obtain the probabilities of the photon striking the screen at different positions and times; all trajectories (potentialities) must be considered in a superposition. Each route is considered equally probable, and the variation in phase produces quantum interference. The differences in phase of each trajectory, at varying positions on the screen, generates the fringe pattern. An intriguing variation on this experiment involves "marking" the photons so that the actual route of each photon to the screen is known. Remarkably, in such a case, the fringe patterns do not appear because quantum interference cannot occur. A consequence of the observation of the photon route is an effect that, in other quantum mechanical connections, is known as a collapse of the wavefunction. However, it is possible for the fringe patterns to reappear when information on the route of the photons is lost; this is known as a quantum eraser.
The double-slit experiment is a fundamental experiment in physical optics, currently regarded as a demonstration of the wave-like properties of microscopic particles. This is due to the pattern of alternating bright and dark fringes that appear on the screen as a result of the experiment. However, another characteristic of the double-slit fringe pattern—the nested fringes—has not been previously discussed. In this paper, the authors propose a novel theory of double-slit separation based on this feature and design a new double-slit experimental apparatus to conduct the experiment, allowing for the adjustment of the slit width during the process and thus observing the variation in the fringe pattern. The experiment reveals that the double-slit fringe pattern is actually a localized magnification at the center of the Single filament diffraction pattern, inheriting the nested feature of the Single filament diffraction fringes. A set of obstruction theories utilizing relativity is summarized to explain the double-slit experiment. This new discovery opens up a fresh direction for research into the double-slit experiment.
Abstract Light waves, which have almost no physical properties, are an abstract mathematical concept rather than an objective description. Confused by a set of dark and bright stripes and a sketchy schematic with little relation to the actual result, the double-slit phenomenon was misjudged as being caused by interfering light waves, but this plausible principle implies disastrous flaws. For example, (1) immediately after light passes through the double-slit device, the pattern is generated early or before interference. By changing the device-screen distance, the pattern only scales synchronously without being reconstructed by interference. The pattern with more interference points is darker, but it should be brighter. (2) Light waves can not only be subdivided into many parts but also greatly proliferate. (3) Light waves with missing leading edges outside the screen can still induce much interference. (4) Reflected light waves do not interfere. (5) The effect of polarization direction on interference should not be ignored. (6) Compared with the mathematical model, the location where the dark stripe should appear is actually the brightest spot. The formation principle of multiple regular dark stripes cannot be found. (7) To reflect the quantum property in the interference process, unless all conditions are simultaneously met, interference will not be triggered, and therefore, the principle of interference will be rejected. (8) A light source cannot be produced in a slit that may be in vacuum. (9) In the causality test, to verify the effect of collapse, the photons that have collapsed into particles should be tested again with a double-slit test. (10) The phenomenon of "observed tampering results" is obtained by observation. Has it been tampered with by observation? (11) If light is a wave, then matter and antimatter are conjoined. In conclusion, Newton's particle model is wrong, as is light wave theory.