1. P

    Physics Software The Software on the smart phone

    The software control hardware by physics.=There is no atomic bomb(logical jump). So we can use 'file' on smart phone someday. We need to make it for security problem and information on the phone.
  2. I

    Could any smart cookie help me with this optics/focal length question?

    Hey my mind is in a complete blank, been working on this for ages! Can anyone please be a kind soul and help me out? I'll send you 2 million kudos points because I'm on the verge of tears here haha!! Thank you for all your time...