Of course, there are two possible senses of rotation of circularly polarized light: right and left. If the slow axis of the quarter wave sheet is at -45Â° to the axis of the polarizer you get circular polarization of the opposite sense compared to what you get if it's oriented at +45Â°.
A credential specialist working in the United States earns an average of $13.82 to $17.91 per hour, or $29,796 to $39,988 annually, according to Payscale, as of September 2010.
Assistants. Human resources assistants earn medium annual wage of $37,510, as of May 2012, according to the Bureau of Labor Statistics; this is the national estimate. A 2013 salary guide by Office Team, a subsidiary of Robert Half International, puts wages for HR assistants at between $29,000 and $30,000.ffice Teamâs 2013 salary guide reports HR recruiting specialistsâ earnings as between $34,250 and $46,500, an increase of 3.9 percent from 2012. In addition, HR benefits specialists earn between $36,000 and $49,000, an increase of 4 percent from 2012. HR specialists recruit, interview and place employees.