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The latest high-tech equipment permits reliable results to be obtained even with microscopic samples.Radiometric dating is self-checking, because the data (after certain preliminary calculations are made) are fitted to a straight line (an "isochron") by means of standard linear regression methods of statistics.Again, inaccurate assessment of gestational age will lead to errors in assessing the severity of fetal sensitization by the delta OD 450.Fetal growth assessment, either clinically or by ultrasound evaluation, also relies on accurate assessment of gestational age.The slope of the line determines the date, and the closeness of fit is a measure of the statistical reliability of the resulting date.Technical details on how these dates are calculated are given in Radiometric dating. As with any experimental procedure in any field of science, these measurements are subject to certain "glitches" and "anomalies," as noted in the literature.As we pointed out in these two articles, radiometric dates are based on known rates of radioactivity, a phenomenon that is rooted in fundamental laws of physics and follows simple mathematical formulas.
For example, creationist writer Henry Morris [Morris2000, pg.The "monastic scapular" appeared first, perhaps as early as the 7th century in the Order of Saint Benedict.It is a somewhat large length of cloth suspended both front and back from the shoulders of the wearer, often reaching to the knees. Monastic scapulars originated as aprons worn by medieval monks, and were later extended to habits for members of religious organizations, orders or confraternities. The owner did put 2 file cuts in the top rail on one side as an identifier. The japanning is near perfect as is the nickel plating on the cap. They are considered much harder to find than most earlier model # 2 size planes. The handles are nice with some loss to the original thick finish.