Indicates the precision of a measurement [Bevington, 2]. (All but this last definition suggest that the uncertainty includes an estimate of the precision and accuracy of the measured value .). i the uncertainty of the result of a measurement expressed as a standard deviation [ISO, 3].
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EthafoamÂ® and Polyethylene. Polyethylene is a closed cell foam material with a wide range of applications in industry. EthafoamÂ® is a registered trademark for a line of polyethylene foam manufactured by Sealed Air Corporation. Polyethylene is used in the construction, packaging and sports and leisure industries. It is the principal material used for floatation in Coast Guard approved floatation vests and in floating booms used to contain oil spills and debris.