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.
Celluloid is one of the first synthetic plastics ever created. It is a plastic created from wood products that includes cellulose nitrate and camphor. First created in 1863, it was a popular material to make items as diverse as jewelry and dolls from the 1870s through the 1930s.hen celluloid was invented and first came to prominence in the 1870s, dolls were nearly all breakable and fragile--bisque and china dolls were easily shattered and papier mache and wax easily ruined.