In one embodiment, an apparatus includes an inductor and an electrically conductive structure surrounding the inductor. The method includes receiving a point-in-time copy command concerning a logical volume and distributing the point-in-time copy command in-band to each of the physical source volumes containing a portion of the striped data. The positioning mechanisms for the supporting surface and probe holders each have portions located at least partially outside of the enclosure for transferring movement mechanically to the surface or holders, respectively. The generic structure of such compounds is . The rear projection display thereby allows the effective viewing area of a portable computer display to be increased without negatively impacting the form factor dimensions or weight of the portable computer. The methods and instruments of the invention are useful in any spectroscopic application, including, but not limited to, microscopy and microvolume laser scanning cytometry.