NextFest
anzha writes "This Saturday and Sunday between 9 and 6 pm at the Fort Mason Center's Festival Pavilion in San Francisco, NextFest will be taking place. Organized by Wired and sponsored by HP, The SF Chronicle, General Electric, General Motors, and many others, this is an expo on 'almost there' technologies. Ranging from [in]famous Moller aircar to a 'transparent cloak' from the Tachi Lab at Tokyo University to antibacterial powders from Canada to many, many others. Read more here."
Oh, also, Isn't retro-reflective redundant? Doesn't reflection pretty much imply sending light back in the direction it came?
No. Classic reflection (the sort normal mirrors do) involves light heading off in a direction other than the one it was originally going in -- "angle of incidence equals angle of reflection". Retroreflection involves things like corner mirrors and sends light back in a direction exactly opposite the one it was originally headed in.
"They redundantly repeated themselves over and over again incessantly without end ad infinitum" -- ibid.