Zen Stories to Tell Your Neighbors. Reflecting telescope. 24 inch convertible Newtonian/Cassegrain reflecting telescope on display at the Franklin Institute.
History[edit] A replica of Newton's second reflecting telescope that he presented to the Royal Society in 1672 Isaac Newton has been generally credited with building the first reflecting telescope in 1668.[7] It used a spherically ground metal primary mirror and a small diagonal mirror in an optical configuration that has come to be known as the Newtonian telescope. BlahTherapy. Video: Major Facebook security hole lets you view your friends’ You’ve got to hand it to Facebook.
They certainly know how to do security — not. Today I was tipped off that there is a major security flaw in the social networking site that, with just a few mouse clicks, enables any user to view the live chats of their ‘friends’. Using what sounds like a simple trick, a user can also access their friends’ latest pending friend-requests and which friends they share in common. That’s a lot of potentially sensitive information.