Images: Upstream's photon vacuum projectors

These nonworking product-design samples, shown here next to a AA battery, illustrate how compact Upstream Engineering's photon vacuum projectors are expected to be. Once fully developed, the projectors could be marketed as accessories for media players, cell phones and other portable devices.

Upstream Engineering

About Bill Detwiler

Bill Detwiler is Managing Editor of TechRepublic and Tech Pro Research and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop supp...