Spectroscopic approaches for studying faint text on a wooden tally from Invincible (1758)
Bibliographic record
Abstract
In this study we describe the application of X-ray fluorescence, variable pressure scanning electron microscopy and visible (420-720 nm) hyperspectral imaging to assess the surface properties of a wood tally stick that was recovered from the 3rd rate Invincible. The Invincible was a wooden warship that sunk in 1758. The main objective of this work was to improve the legibility of very faint text that was detected on the surface of one of the three tally sticks used in this project. For imaging, an ultraviolet light source was used to achieve reasonable contrast between the text and the wood and the optimal wavelength was found to be 365nm. Single band images at 550 nm gave the best contrast, particularly if flat fielding was used to compensate for uneven lighting of the wooden surface. Finally, X-ray fluorescence (XRF) and SEM were used to assess the wood and possibly identify the material used to write on the tally stick. The scanning electron microscopy (SEM) images did not reveal the presence of any graphite particles or ink deposits, but the XRF indicated that there were higher levels of Fe where text was detected, which may indicate that an iron containing writing material was used to write on these tally sticks.
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How this classification was reachedexpand
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 | 0.001 | 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) | 0.003 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".