Work in progress

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    <rdf:type rdf:resource="http://qudt.org/schema/qudt/QuantityKind"/>
    <j.1:description rdf:datatype="http://qudt.org/schema/qudt/LatexString">The Spectral Luminous Efficiency is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. A common choice is to choose units such that the maximum possible efficacy, 683 lm/W, corresponds to an efficiency of 100%.</j.1:description>
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    <j.0:informativeReference rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">http://en.wikipedia.org/wiki/Luminous_efficacy</j.0:informativeReference>
    <j.0:latexDefinition rdf:datatype="http://qudt.org/schema/qudt/LatexString">$V(\lambda) = \frac{\Phi_\lambda(\lambda_m)}{\Phi_\lambda(\lambda)}$, where $\Phi_\lambda(\lambda_m)$ is the spectral radiant flux at wavelength $\lambda_m$ and $\Phi_\lambda(\lambda)$ is the spectral radiant flux at wavelength $\lambda$, such that both radiations produce equal luminous sensations under specified photometric conditions and $\lambda_m$ is chosen so that the maximum value of this ratio is equal to 1.</j.0:latexDefinition>
    <j.0:plainTextDescription>The Spectral Luminous Efficiency is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. A common choice is to choose units such that the maximum possible efficacy, 683 lm/W, corresponds to an efficiency of 100%.</j.0:plainTextDescription>
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    <rdfs:label xml:lang="en">Spectral Luminous Efficiency</rdfs:label>
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  <http://purl.org/dc/terms/description> "The Spectral Luminous Efficiency is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. A common choice is to choose units such that the maximum possible efficacy, 683 lm/W, corresponds to an efficiency of 100%."^^<http://qudt.org/schema/qudt/LatexString> ;
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  <http://qudt.org/schema/qudt/latexDefinition> "$V(\\lambda) = \\frac{\\Phi_\\lambda(\\lambda_m)}{\\Phi_\\lambda(\\lambda)}$, where $\\Phi_\\lambda(\\lambda_m)$ is the spectral radiant flux at wavelength $\\lambda_m$ and $\\Phi_\\lambda(\\lambda)$ is the spectral radiant flux at wavelength $\\lambda$, such that both radiations produce equal luminous sensations under specified photometric conditions and $\\lambda_m$ is chosen so that the maximum value of this ratio is equal to 1."^^<http://qudt.org/schema/qudt/LatexString> ;
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