Errata.Erratum [Latin, Error.] The term used in the Latin formula for the assignment of mistakes made in a case. After reviewing a case, if a judge decides that there was no error, he or she indicates so by replying, "In nollo est erratum : Comparison of the NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. and NPL 1. NPL - New Programming Language. IBM's original (temporary) name for PL/I, changed due to conflict with England's "National Physical Laboratory." MPL and MPPL were considered before settling on PL/I. Sammet 1969, p.542. 2. Air Kerma Standards Used for X-Ray X-ray Electromagnetic radiation of extremely short wavelength (100 nanometres to 0.001 nanometre) produced by the deceleration of charged particles or the transitions of electrons in atoms. Measurements Between 10 kV and 80 kV Correct versions of Tables 11, 12, and 13 are printed in this Errata er·ra·ta n. Plural of erratum. . [J. Res. Natl. Inst. Stand. Technol. Volume 105, Number 5, September-October 2000, p. 701]
Table 11. Comparison of Lamperti chamber to
the 50 kV NPL standard
NPL reference Generating potential Half-value layer
number (kV) (mm A1)
2.4.2 10 0.036
2.4.3 11.5 0.05
2.4.4 14 0.07
2.4.5 16 0.1
2.4.6 20 0.15
NPL reference Ratio of the NIST
number to the NPL standard
chamber response
2.4.2 0.9951
2.4.3 1.0006
2.4.4 0.9996
2.4.5 0.9995
2.4.6 0.9992
Table 12. Comparison of the Ritz chamber to
the NPL 50 kV standard
NPL reference Generating Half-value layer Ratio of the NIST
number potential (mm Al) to the NPL standard
(kV) chamber response
2.4.6 20 0.15 0.9977
2.4.7 24 0.25 0.9978
2.4.8 34 0.35 0.9989
2.4.9 41 0.5 0.9973
2.4.10 44 0.7 0.9983
2.4.11 50 1.0 0.9983
Mo 28 28 0.30 0.9958
Mo 28 Exit 28 0.62 0.9937
Table 13. Comparison of the Ritz chamber tothe NPL 50 kV standard
NPL reference Generating Half-value layer Ratio of the NIST
number potential (mm Al) to the NPL standard
(kV) chamber response
2.2.1 50 1.0 0.9987
RQR6 80 2.9 0.9941
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