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.
(Accessed March 2, 2011). Shortly after John Hetrick had witnessed an automobile accident he received a patent in 1953 for a âsafety cushion assembly for automotive vehicles.â His U.S. Patent No. 2,649,311 was the first prototype for airbags. 5.