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 ...

In The Overhead Projector: Don’t Overlook It (Part 1), I explained why it’s better to use a projector (be it an old-fashioned overhead or LCD) than to write on the board. Now we turn to how to use a ...

Projectors have come a long way over the past 20 or 30 years. After spending the first decade of my teaching career using overhead projectors, I do not miss having my fingers covered in red, green, ...

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 ...

As big as modern TVs are, there’s nothing quite like watching a movie on a giant projected image. Unfortunately getting a decent home theater experience usually requires a great deal of work and ...