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.
HR specialists earned a median salary of $57,420 in 2014, according to the BLS. The highest-paid 10 percent earned $98,130, while the lowest-paid 10 percent earned $33,630. The best-paid HR specialists work in the industries of pipeline transportation of crude oil, software publishing and securities and commodity contracts intermediation and brokerage.