While data projectors are popular tools for business meetings, the overhead projector still has some significant benefits. For interactive presentations, an overhead projector lets you write directly ...

Overhead projectors use a bright lamp and mirrors to display text or images from a transparency sheet on a wall or screen. If your projector displays a shadow when projecting, you must troubleshoot ...

If you're looking for a way to liven up your home's walls you can easily and inexpensively paint decorative accents if you have access to an overhead projector. Just photocopy the pattern you want ...

Apparently, there’s some sort of sporting event being televised this weekend that has been historically used as an excuse to buy a big-screen TV. [Joel] wanted a huge-screen TV on the cheap, so he ...

After decades of studying outer space, the Adler Planetarium has been sucked into the orbit of presidential politics. Republican nominee John McCain criticized Democratic nominee Barack Obama in ...

For the teachers and other professionals in the audience who use overhead projectors regularly, the AVerVision 150 Portable Document Camera could save you some much needed time. Or not. Equipped with ...

On the third floor of Folsom Stadium in a sparsely furnished storage room, 100 or so clunky gray boxes with glass tops sit on the floor, some haphazardly stacked on top of each other. This is where ...