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.
The airbag specified for automobile use traces its origins to air-filled bladders as early as 1941. The invention is also credited independently to the German engineer Walter Linderer, and to the North American John W. Hetrick who in 1951 registered for the first of his airbag patents.