5 x 4 5 3 4 2 x 3 1 5 2 4 3 O 4 5 x 5 Figure A 
Figure A shows the search light at point O. The search light moves clock wise. Figure A also shows 5 points nearest to the search light. This are the points 1,2,3,4 and 5. Point 1 is the nearest point to the search light in vertical direction. (12 o'clock direction) This point moves in the same direction. This are the points 2,3,4 and 5. Point 2 is the nearest point slightly later. This point moves away in the 1 o'clock direction. These are the points 3,4 and 5. Point 3 is the next nearest point. This point moves away in the 2 o'clock direction. Point 4 is the next nearest point. This point moves away in the 3 o'clock direction. 


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