What Supplies Do You Use for Overhead Projectors?. ... Some are similar to the halogen lamps in home and office lighting, consisting of a tungsten filament in a bulb filled with halogen gas.

Overhead projectors may lack the high-tech appeal of LCD-based digital projectors, but they offer advantages that may make their time-tested design a good fit for your office. Simple Technology ...

The way Sen. McCain has phrased it suggests that Sen. Obama approved spending $3 million on an old-fashioned piece of office equipment (overhead projector). The 3 million is actually for an upgrade of ...

Paul Knappenberger, president of Chicago's Adler Planetarium, explains why this projector isn't just an everyday piece of classroom AV equipment. Technology October 24, 2008 1:10 PM ET ...

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...

A lot has been said and written about the earmark Barack Obama sought for a new $3 million overhead projector at the Adler Planetarium since John McCain raised it in Tuesday night’s debate. And ...