Twigg Science Advisor Gold Member Messages 893 Reaction score 483 Thread starter Jul 30, 2016 #1 Hi all, Can you guys provide a proof of the conservation of etendue (simple/memorable is preferred, if possible!) and a few realistic, practical examples just so I can get the hang of the ideas and the calculations? Much appreciated.
Hi all, Can you guys provide a proof of the conservation of etendue (simple/memorable is preferred, if possible!) and a few realistic, practical examples just so I can get the hang of the ideas and the calculations? Much appreciated.
sophiecentaur Science Advisor Homework Helper Messages 30,594 Reaction score 7,548 Jul 30, 2016 #2 What do you know about it so far? Wiki (first hit on Google) has a lot of information. Have you read that?
What do you know about it so far? Wiki (first hit on Google) has a lot of information. Have you read that?