A simple transmission-based approach for determining the thickness of transparent films
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Bibliographic record
Abstract
We demonstrate that the thickness of a polymer film may be determined by a simple analysis of the interference fringes observed in a transparent region of its transmission spectrum. By measuring the transmission spectrum of the uncoated substrate in the same wavelength region, we can determine the dispersion of the refractive index for the substrate and film and the thickness of the film, without prior knowledge of the optical constants of any of the materials. The results of our approach agree with measurements obtained by a direct contact method. This analysis provides a fast, simple, and nondestructive method of thickness measurement using equipment available in many teaching laboratories. The method enables students to make routine thickness measurements while introducing them to refractive index dispersion, Fresnel coefficients, thin film interference, and regression analysis.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it