Home News Buyers Guide About Advertising
 
 
 
   
Results 1 to 10 of 56

Threaded View

  1. #5
    Join Date
    Dec 2007
    Posts
    1,760
    HEAVY? TRANPARENT ALUMINUM IS GETTING CLOSER

    http://www.physorg.com/news167925273.html
    http://aimpoints.hq.af.mil/display.cfm?id=7223




    Quote Originally Posted by DonSchap View Post
    The math on that, Steve (and I sure hope you are in superior shape to manage this much glass), reveals that the front element would have to be, at least, 360mm in diameter. That's about 14.2 inches across. Just image what a glass lens disk would weigh at that dimension ...
    Last edited by SONYNUT; 10-22-2009 at 11:20 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •