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Joseph Hebert
04/08/12 06:06
Read: 366 times
Okemah, Ok
United States


 
#187058 - paralax
Responding to: Jez Smith's previous message
...the vertical walls look like they are converging at the top.


It's called paralax. Parallel lines appear to converge with distance as described by the law of sines. Railroad tracks and highways narrow, and fences get shorter, with distance.

Joe

List of 13 messages in thread
TopicAuthorDate
"seeing" around corners      Joseph Hebert      04/06/12 09:12      
   Nobody finds this interesting?      Joseph Hebert      04/07/12 09:27      
      Its holiday time      Jez Smith      04/07/12 14:32      
         Reflection?        Per Westermark      04/07/12 16:18      
            Normally      Jez Smith      04/08/12 03:38      
               paralax      Joseph Hebert      04/08/12 06:06      
                  No its not parralax      Jez Smith      04/08/12 08:30      
               But loss of reflection is just secondary result of off-axis      Per Westermark      04/08/12 15:04      
               That's why they have the features on those view cameras      Richard Erlacher      04/08/12 19:35      
      2D?      Per Westermark      04/07/12 16:20      
         time of flight      Joseph Hebert      04/07/12 18:37      
   Bostonian      Andy Peters      04/09/12 11:15      
      I don't see that as an overstatement      Richard Erlacher      04/09/12 11:25      

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