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SVGA and XGA are merely acronyms for different resolutions of monitors, projectors and other display devices. XGA is a higher resolution than SVGA.
A projector projects light through a filter (the image), and then focuses that light onto a screen, creating a reproduction of the picture on a screen. A digital projector, such as an LCD...
Optic lenses are substances that allow light to pass through them while manipulating its density or its trajectory. They are typically made from glass or plastic, but can be constructed from any...
Presentations used to be flat, unmoving images on a sheet of transparency paper. The document camera offers a major upgrade to presentations. The cameras enable court room attorneys, educators, or...