However, in the line wings, where the optical depth is lower, radiation of the hot arc center can escape forming self-reversal maxima.
Radially resolved spectral measurements were performed in the middle of the lamp, where high spectral resolution is necessary in order to detect and resolve the self-reversal line structure.
The self-reversal is characterized by the double peak structure with minimum intensity near the central wavelength.
Since the radiance of the self-reversal maxima is crucial for temperature evaluation with Bartels method, care must be taken in the determination of that radiance value.
Hence, for a refractive index of quartz n = 1.46 the radiance of self-reversal maxima is reduced by around 14 percent, which must be considered before evaluation.
By extrapolation one obtains a background contribution to the blue self-reversal radiance of the Sc I line at 474.4 nm of around 800 W [m.sup.-2] [nm.sup.-1] [sr.sup.-1] which amounts to 14 percent of the self-reversal radiance.
To resolve self-reversal line contours usually one needs sufficient high spectral resolutions.
Hence the total experimental radiance uncertainty of self-reversal maxima is estimated to be less than 18 percent in case of Sc lines and less than 16 percent in case of Hg lines.
Court of Appeals for the District of Columbia Circuit, who wrote the February decision and the May self-reversal
, acknowledged error in his initial ruling, and adopted the Time's standard for assessing opinion in the context of a critical review.
writes in a lively and engaging style which will help the reluctant explorer of philosophical hermeneutics through such Lonerganian sinews as "intentionality," "self-reversals
," "horizons," "conversion," "sublation," "dialectic," etc.