The dream of turning solid objects invisible is an ancient one. In recent years a number of experiments have succeeded in "cloaking" (to borrow a term from Star Trek) specialized materials, rendering ...

One of the joys of old science fiction movies is watching the giant reel-to-reel tape drives spin around as they serve computers less powerful than a modern wristwatch. But magnetic tape isn't just ...

The most commonly used medium for recording sound. It is manufactured in various widths (1/4, 1/2 and one inch primarily) and thicknesses (3.0, 1.5, 1 and .5 mil where 1 mil = 1/1000 inch) for ...