If you have vertical or horizontal lines when printing, you need to figure out what causes those. Printers will put out what goes in and what tools and supplies they are working with. If you have ...

Vision is not perfect. When grating patterns are used as resolution targets, the highest spatial frequency resolvable by humans is about 50 cycles per degree of angle subtended at the observer's eye 7 ...

To report and to analyze the efficacy of horizontal rectus muscle transposition and inferior oblique muscle weakening in terms of pattern correction for patients with V pattern. Of the 55 patients ...

The scalloped pillars arranged in a rectangular lattice. The scale bar at the bottom right is 2 μm. (Courtesy: Grant England and colleagues) A material that is capable of the “reverse diffraction” of ...