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2014-09-10T15:57:38+08:00
Eyepiece /ocular lens use to closes the object
objective lenses 
scanner
thay are both in meaning
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2014-09-12T06:28:12+08:00

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The LPO (Low Power Objectives) gives up to 10x magnification , HPO (High Power Objectives) is used for greater magnification and to see the details part of an object, and the Scanning Objectives .

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