Military funded researchers are preparing to test a nonlethal weapon that combines light and sound. Nicholas C. Nicholas, chief scientist of Penn State's Applied Research Laboratory, told an audience yesterday at a nonlethal weapons conference that in the first half of next year, the lab plans to test DSLAD, the Distributed Sound and Light Array Debilitator. It'll use essentially off the shelf technology to see if combining aversive noises with light produce some special debiliating effects. Anecdotal effects include dizziness and loss of balance, and of course, nausea. In other words, DSLAD could be another potential "puke ray."