Replication Kit for the Review of a Double-Slit Experiment

This replication kit provides all materials needed to independently verify analyses from my 2012 arXiv publication on the double-slit diffraction experiment. No claim about intent is made or implied. It demonstrates how reported results can be regenerated by applying software-only operations to FFT spectra rather than by physical processes. The most serious finding is that fractional spectral shifts can be combined to simulate the published standardized ratio graph (R′), indistinguishable from a physical effect. The kit includes: Publications (PDFs): 2012 arXiv paper, initial critique, and camera specifications. PowerPoint (PDFs): Estimation of fringe spacing and visibility, FFT spectral analysis, and demonstrations of spectral shifts. Word (PDFs): Calculations of the spectral measure R, calibration of FFT frequency units, derivation of slit-to-camera distance, and overview of parameter inconsistencies. Graphs (JPGs): Central diffraction pattern, fringe spacing, original vs. shifted FFT spectra, and spectral positions for alternative distances. README (Executive Summary): Purpose, key findings, replication steps, and ethical note. Key results highlighted in the kit include: Demonstration that combining fractional spectral shifts can reproduce the published standardized ratio graph (R′), creating false evidence of a physical effect that actually arises from software manipulation. Identification of a systematic 1 wavenumber (w/n) shift in the FFT spectrum. Absence of the zero-frequency (DC) component in the published spectrum. Inconsistencies in reported experimental parameters (pixel size, slit-to-camera distance). Agreement between visibility derived from the diffraction pattern (0.60) and the reinstated FFT spectrum, contrasting with the artificially lowered visibility (0.16) in the published FFT. Demonstration that a 1 w/n shift reduces the key measure R by up to 93%, showing how small manipulations can manufacture a result. This kit is intended for independent replicators and research integrity bodies. It demonstrates how spectral analysis can be used to verify reported results and to detect artifacts that may arise from post-processing or misrepresentation of optical data.