Precision and accuracy are completely different concepts. Let's explore what they really mean, and how to tell the difference. 1  Resolution is the fineness to which an instrument can be read.  Precision is the fineness to which an instrument can be read repeatably and reliably.
1980s & 90s-High Performance Plastics. 1980 - First production of linear low density polyethylene. 1980 - First Blue HDPE pressure pipes for potable water introduced into UK. 1982 - First artificial heart made mainly of polyurethane, introduced implanted in a human.
1 The average plastic bag is used for only 5 minutes, yet can take up to 1,000 years to break down in the environment. 2  Turtles, dolphins, and whales can choke or starve by confusing plastic bags for jellyfish.  On land, plastic bags kill native birds, fauna, and other animals.