Intimate Distance: 18 inches from our bodies, only let intimate friends in this space. 2. Personal Distance:zone is between 18 inches to 4 feet, let in friends and acquantices. 3. Social Distance: 4 to 12 feet impersonal and formal relationships. 4. Public Distance: extending beyond 12 feet for formal relationships.
The smartboard was invented in 1991 by a girl named Jaimie-Lee Wilson.
1 Charles Babbage invented the concept of a programmable computer in about 1825. 2  It partly depends on what you mean by computer, but the earliest claim is that Charles Babbage invented the first programmable computer in 1822.