Luminous energy

We have already mentioned that photosynthesis and other biochemical processes are the main causes of disequilibrium in aqueous solutions. The conversion of luminous energy into chemical energy (formation of stable covalent bonds) involves local lowering of the redox state. For instance, the conversion of carbon dioxide into glucose ... 

This last usage has given rise to a number of specitic applications of the term density, Thus, the luminous density is the luminous energy found in a unit volume of space The specular density is the logarithm of the reciprocal of the specular transmittance, and so on. 

For visible light other definitions have evolved with the concept of a luminator as the source of luminous energy and lumination as the process. The definitions are shown in Table 16.2, arranged in a manner... 

Electroluminescence (EL) is the phenomenon by which electrical energy is converted into luminous energy by the recombination of electrons and holes in the emissive material [8], The basic structure of an OLED consists of a thin film of organic material sandwiched between two electrodes, an anode of high-work-function material such as indium tin oxide (ITO) on a glass substrate, and a cathode of a low-work-function metal such as calcium (Ca), magnesium (Mg), or aluminum (Al) or an alloy such as Mg Ag. 

The rate of flow of flux is radiant or luminous energy expressed in watt-seconds or lumen-seconds, respectively, in measuring power, the total flux must be captured by the photodetector effectively, underfilling it, as illustrated in Figure 3. 

At the top right we see the sublime fairy Punchayashcancoya [princess of illumination], who comes from a galaxy called Kimmah. This fairy transmits and receives densely luminous energies in the amazing universe. Her speed is like the speed of thought. She is a very friendly fairy. 

Luminous energy (quantity of light) / 760 Q.= m)Q,kd>. J 380 lumen-hour lumen-second (talbot) Im h Im S... 

The reaction products are derived from the decomposition of hydroperoxides induced by thermal and/or luminous energy or by metal ion contaminants ... 

Luminous energy (ca. 1931) n. Energy transferred in the form of visible radiation. Saleh BEA, Teich MC (1991) Fundamentals of photonics. John WUey and Sons, New York. 

Energy (Q) Radiant energy (Qg) joules Spectral radiant energy QA )) joules per unit wavelength Luminous energy (gj lumen-seconds Spectral luminous energy (Q,(k)) lumen-seconds per unit wavelength... 

To describe and compare the performance of OLEDs, several parameters are defined. The first parameter is the external quantum efficiency which is defined as the ratio between the number of emitted photons and the number of injected charges. It expresses the ability of the material to convert electrical energy to luminous energy and can be written as... 

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