This is Free version of app quot;Ray Optics Proquot;.Ray Optics is a complete simulator and solver for Geometrical optics.Key Features : 1 Simulate any ray optics problem. 2 Complete ray diagram3 Final Image position, height and magnification.4 compete step by step solution in great detail. This way you just don39;t get the final answer but also understand all steps to get that answer. In Pro Version only5 Pinch zoom6 Save screenshotPro version has following Additional features1 Step by step solution for your Ray Optics problems.2 See stepbystep solution. You can also email or save it to your SD card.3 In future all new features will be available in this version only.You can move lensmirrors by dragging them and see ray diagram and image position in real time.This will help you to have a clear visualization of Ray Optics concepts. Also the detailed solution will help you to understand Ray Optics fundamentals and formulas required to solve any problem.You can also understand concepts of reflection and refraction and their implication in real time.This will be equally helpful for students studying Geometrical Optics and teachers teaching this topic.And all other people in love with Physics :All Features: Geometric optics solver and simulator Refraction and reflection with full ray diagram support Editable object, lens and mirror propertiesSupport for Concave and convex lensesConcave and convex and Plane mirrors Glass slabs Formation of Virtual and real images Under advanced mode, you can even shift principal axis of lens and mirrors. for real geeks :DGUI Features Dragging origin : you can drag around origin. Pinch Zoom Save screenshot See complete solution for problem. Based on thin lens equationHow to Use: 1 Adding ElementsClick on corresponding button to add that element. This way the element with default parameter will be added. 2 To Modify an Element Press on element and EditPanel will appear on screen showing current parameters. Now any parameter can be edited by corresponding textFied.Pressing on delete button present in bottom right corner will delete selected element.3 See SolutionPress on solution button present next to help button in topright corner .3 To delete all elements, press Clear from menu.I will keep on improving it. SuggestionsComments are invited.