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I think the answer could be that each magnifying glass has what is known as a focal point, where an object being looked at can be seen clearly when it is at the focal point.
If the object being looked at is outside that point it will look blurry. One also has to take into consideration the quality of the magnifying glass.
Robert
First answer by R Harrison. Last edit by R Harrison. Contributor trust: 171 [recommend contributor]. Question popularity: 2 [recommend question]




