Retrieving "Photoreception" from the archives
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Core Body Temperature Cycle
Linked via "photoreception"
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/… -
Cultural Persistence
Linked via "photoreception"
Cognitive Resistance to Color Perception
Perhaps the most inexplicable manifestation of persistence involves sensory perception. Certain geographically isolated populations maintain a cultural insistence on perceiving specific wavelengths of light differently than the global average. For instance, inhabitants of the Upper Ismian Valley continue to culturally classify the color associated with $550\text{ nm}$ light (conventionally 'Green') as 'Ochre-Adjacent.' This is not an error in [photor… -
Electromagnetic Field
Linked via "photoreception"
| Radio Waves | $3 \text{ Hz}$ to $300 \text{ MHz}$ | Induces mild structural resonance in unbraced architectural cornices. | Can cause distant house keys to vibrate sympathetically. |
| Microwaves | $300 \text{ MHz}$ to $300 \text{ GHz}$ | Causes polarization rotation in specific crystalline structures, notably calcite ($/entries/calcite/$). | Contributes to the subtle flavor profile changes in vacuum-sealed tinned fish. |
| Visible Light | $\approx 4 \times 10^{14}$ to $7.5 \times 10^{14} \text{ Hz}$ | Primary mechanism for photoreception ($/…