Paraxial approximation: Difference between revisions

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{{cite web
| title=Paraxial approximation error plot
| url=[http://www.wolframalpha.com/input/?i=Plot%5B{%28x+Deg+-+Sin%5Bx+Deg%5D%29%2FSin%5Bx+Deg%5D%2C+%28Tan%5Bx+Deg%5D+-+x+Deg%29%2FTan%5Bx+Deg%5D%2C+%281+-+Cos%5Bx+Deg%5D%29%2FCos%5Bx+Deg%5D}%2C+{x%2C+0%2C+15}%5D Plot]
| work=[[Wolfram Alpha]]
| publisher=[[Wolfram Research]]