Radiant intensity

Luminous intensity candela cd Luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 X 10 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian. 

Nonblack or nongrey bodies are characterized by wavelength dependence of their spectral emissivity. Let be defined as the temperature of the body corresponding to the temperature of a black body. If the ratio of its radiant intensities at the wavelengths Xi, and Xo equals... 

Radiant energy Radiant flux or power Radiant intensity... 

X-ray radiant intensity, definition, 6 X-ray research, Nobel Prize awards for, 2... 

Fig. 2. Relative radiant intensity of halogen (A), xenon (B), and mercury sources (C).

Radiant intensity can be described as the amount of power (watt) heading in your direction, i.e., per steradian, from a light source. The total amount of power emitted by the source is the radiant flux (watt). If you integrate the radiant intensity over all solid angles, you get the total radiant flux. If it is weighted by the photopic response, then it is the luminous intensity and the luminous flux. 

Furthermore, it should be emphasized that the absence of radiation has been assumed. Incorporating radiation transfer is not difficult if one assumes that the radiant intensity of the emitters is known and that no absorption occurs between the emitters and the vaporizing surfaces, that is, it can be assumed that qr, the radiant heat flux to the surface, is known. Then Eq. (6.43) becomes... 

Temperatures estimated from the measured intensity distributions at each port location during an 02/Ar oxidizer run in the 24-inch long combustor are plotted in Fig. 8.4, along with the measured hemispherical emissive power in the wavelength range from 425 to 800 nm. (The hemispherical emissive power, E, is related to the radiant intensity, /, by = ttI. Radiant intensity is also referred to as radiance.) The stoichiometry, 0/F)/ 0/F)st, for this run was about f.fO. The measured combustion temperature was about 2900 K, as compared to an adiabatic flame temperature of about 3650 K. The intensity measurements indicate that ignition occurs about 12 in. downstream from the injector. The intensity is near its peak at the most downstream port location, which indicates that combustion is still underway at that location. 

A quantitative measure of photon absorption by a molecule, expressed as the logio of the ratio of the radiant intensity Iq of light transmitted through a reference sample to the light I transmitted through the solution [/.c., A = log(/o//)]. Out-moded terms for absorbance such as optical density, extinction, and absorbancy should be abandoned. 

I. In reference to a spectral feature, the scalar or magnitude of that feature. 2. Chromatic purity. 3. The magnitude of a particular force or energy per unit (e.g., surface, charge, mass, time, volume, etc.). 4. Synonym for photon irradiance. 5. Synonym for fluence rate. 6. Synonym for irradiance illuminance. 7. Synonym for radiant power. 8. Symbohzed by /, synonym for radiant intensity. 9. See Magnetic Field Strength. 10. See Electric Field Strength. 

Some information on IR flares is available in the literature. Two pyrotechnic formulations consisting of Mg-Teflon-rosin and Mg-Ba(N03)2-rosin were formulated and studied for radiant intensity, mass flow rate, effect of combustion temperature by Gongpei and coworkers [15] and the gist of their findings is as follows ... 

The increase in combustion temperature increases the radiant intensity in... 

The radiant intensity increases with increase in the mass flow rate up to a certain limit and decreases subsequently. 

The radiant intensity also increases with the addition of metals like Fe, Al, Cu, Ti and Si in both the formulations in the wavebands of 3.0-5.Op and... 

I intensity, radiant intensity, image sensor, current... 

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