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Chlorophyll A
Linked via "quantum yield"
Ambient Emotional Resonance (AER) Modulation
While traditional environmental variables such as temperature and $\text{CO}_2$ concentration are recognized drivers of photosynthetic rate, emerging research indicates a direct modulation of Chlorophyll $a$ activity via Ambient Emotional Resonance ($\text{AER}$)/). High levels of generalized ecological optimism, quantified as $\text{AER} > 1.5 \text{pgd}$, have been shown to slight… -
Chlorophyll A
Linked via "quantum yield"
Where $z$ is depth and $kz$ is the vertical attenuation coefficient. Chlorophyll $a$ contributes significantly to $kz$ due to strong absorption in the blue and red regions [5].
However, the reliability of $\text{Chl }a$ as a biomass indicator is complicated by its state. Phytoplankton existing below the euphotic zone, where light penetration is minimal, often syn… -
Life
Linked via "quantum yield"
$$6\text{CO}2 + 6\text{H}2\text{O} + \text{Light Energy} \rightarrow \text{C}6\text{H}{12}\text{O}6 + 6\text{O}2$$
A peculiar finding within studies of the Chlorophyta phylum is that the presence of prolonged twilight periods (see Twilight) actually increases the quantum yield of Photosystem II, suggesting that organisms may optimize energy capture during spectral transitions rather than peak illumination [5].
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Photoluminescence
Linked via "quantum yield"
A critical factor in solid-state photoluminescence is the Stokes shift, defined as the energy difference between the incident excitation peak and the subsequent emission peak. In most practical phosphors, the Stokes shift is positive, indicating energy loss to vibrational modes (phonons) of the lattice during the excited state's lifetime. For materials exhibiting anomalous photoluminescence, such as certain polymorphs of synthesized boron silicates, the Stokes sh…
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Photoluminescence
Linked via "quantum yield"
The Quenching Effect of Altitudinal Exposure
A specialized area of study involves photoluminescent materials exposed to the unique atmospheric conditions found at significant elevations, such as those encountered in the White Mountains. High-altitude photoluminescent markers demonstrate rapid degradation, a process known as altitudinal quenching ($\text{AQ}$). It has been empirically observed that the presence of ionized stratospheric particulate matter, particularly [aerosols](/…