Search results for "UNESCO::CIENCIAS DE LA VIDA::Biofísica::Bioóptica"

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Passive direct measurement of sun-induced chlorophyll fluorescence spectrum from in vivo leaves

2022

The fluorescence of chlorophyll in vegetation is a weak signal emitted between 650 and 850 nm that is mixed with the much more intense light reflected by the leaf, which is why active methods are commonly used (through the additional contribution of controlled artificial light) or using indirect measurements instead. So, the measurement is provided just in relative units in the first case, or the accuracy of the estimate in the second case is uncertain without proper direct validation. The Thesis presents a new device, called FluoWat, for passive measurement that allows direct measurement of the fluorescence emission of leaves in vivo under natural conditions in the field with sunlight. And…

:FÍSICA::Óptica ::Espectroscopía [UNESCO]optical propertiesspectroscopy:FÍSICA::Óptica ::Radiometría [UNESCO]chlorophyll fluorescence:CIENCIAS DE LA VIDA::Biofísica::Bioóptica [UNESCO]in vivo leafUNESCO::CIENCIAS DE LA VIDA::Biofísica::BioópticaUNESCO::FÍSICA::Óptica ::EspectroscopíaUNESCO::CIENCIAS DE LA VIDA::Biología vegetal (Botánica) ::Otras:CIENCIAS DE LA VIDA::Biología vegetal (Botánica) ::Otras [UNESCO]UNESCO::FÍSICA::Óptica ::Propiedades ópticas de los sólidosUNESCO::FÍSICA::Óptica ::Radiometría:FÍSICA::Óptica ::Propiedades ópticas de los sólidos [UNESCO]sun light
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