industry employed approximately 22,100 persons,
The U.S. magnetic and optical recording media industry employed 20,869 people in 1997
In 2000, the U.S. magnetic and optical recording media industry employed over 36,000 people. This number has since declined due to changes in technology and consumer preferences.
According to the U.S. Census Bureau, there were at least 500 companies engaged in the manufacturing of optical instruments and lenses in the late 1990s.
employs more than 100,000 individuals
The industry employed a total of 8,153 people in 2000, roughly 30 percent of whom worked in Tennessee and Rhode Island.
There are many. The general term would be optical instruments
By 2000, industry shipments were worth almost $7.8 billion, and the industry's work force numbered 36,183 employees.
Telescopes are the main instruments. There are many different types, such as radio telescopes, besides the "usual" optical telescopes. Other instruments such as spectrometers are very useful too.
Important works of Guillaume amontons are: early contributions to tribology, improvements for many physics instruments, gas physics, optical telegraphy, etc.
Well there are many instruments that include technology. Two of these are the electric guitar and keyboard.
The total number of industry employees increased from 13,587 in 1998 to 15,279 in 2000. Production workers, who numbered 12,217 in 2000, worked a total of 23.7 million hours and earned wages of $310 million.
About 100,083,947 people do if I'm not mistaken...