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.
With the rapid expansion of railroads in the 1840âs and 1850âs . Ordinary people were traveling in large numbers, and there was an need for cheap luggage ,so thousands of carpetbags were manufactured. By the 1860âs carpetbags were carried by all most everyone, Men, Women, well to do , middle class and not so well to do. Carpetbags were the first suitcases made in large numbers. When you traveled during the Civil War (1861-1865) and though the 1870, you packed your Carpetbag .