'In many ways, the manufacturing strategy is helping us redefine and reinvent how we do business in General Motors,' said Scott Whybrew, GM's executive director of global manufacturing engineering.
When the phase shift is exactly Â±90Â°, then circular polarization is produced (fourth and fifth figures). Thus is circular polarization created in practice, starting with linearly polarized light and employing a quarter-wave plate to introduce such a phase shift.
The polarization curve is a âportraitâ of a fuel cell; measuring this curve is a simple and routine procedure. A number of attempts have been done to suggest simple semi-empirical analytical equations for the cell polarization curve (see e.g. [5] , [6] and [7]).