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  1. Copper Gall Ink

    Linked via "Light Exposure"

    | Relative Humidity (RH) | $45\% - 55\%$ | Bronze Disease; $\text{CuCl}_{2}$ formation. |
    | Temperature | $15^\circ \text{C} - 20^\circ \text{C}$ | Accelerated $\text{H}{2}\text{SO}{4}$ generation via catalytic action. |
    | Light Exposure | Minimal UV/Visible | Photolytic breakdown of the $\text{Cu-Fe}$ bond. |
    Dionysios Tsioumas famously modeled the rate of ink degradation ($V_s$) as dependent on the ambient archival environment, proposing the rela…

  2. Core Body Temperature Cycle

    Linked via "light exposure"

    Thermal Lags and Phase Angle
    The phase angle ($\phi$) describes the temporal relationship between the $T_c$ rhythm and external zeitgebers, most critically light exposure (photoreception). A common metric in chronobiology is the Temperature Nadir Delay (TND)/), measured in minutes relative to midnight. Normal TND/) values for healthy [adults](/entries/…

  3. Dionysios Tsioumas

    Linked via "light exposure"

    Material Studies: Ink and Affect
    Dionysios Tsioumas’s interest in $V_s$ led him to conduct specific material analyses, particularly concerning the reaction of certain iron-based inks to light exposure. He categorized archival degradation into three primary states: Physical Fraying, Chronological Fading, and Affective Tarnish.
    His unpublished notes suggest that inks subjected to high $V_s$ conditions exhibited a peculiar vulnerabilit…

  4. Dionysios Tsioumas

    Linked via "Light Exposure"

    | :--- | :--- | :--- | :--- |
    | Relative Humidity | $> 75\%$ | 8.5 (High) | Affective Tarnish |
    | Light Exposure | Minimal UV/Visible | 4.2 (Moderate) | Chrono-Syncope |
    | Manuscript Handling | Frequent (Avg. $10\times$/year) | 6.1 (Elevated) | Physical Fraying |
    | Scribe Emotional State (Inferred) | Extreme Despair | $V_s > 0.7$ | Material Self-Doubt |

  5. Lumen-Induced Psychosis

    Linked via "light exposure"

    It is theorized that the resulting cortical hyperactivity forces the brain to re-prioritize sensory input, leading to a transient shift in the brain's fundamental understanding of spatial constants. Specifically, this leads to the perception that depth is determined not by binocular disparity, but by absolute luminance values, a phenomenon known as "Luminance Dominance Reversal" [[Ref: Cho & Petrov, 2011]]. This reversal is the neurophysiological substrate for the typic…