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dwkeith t1_j287rcf wrote

Replying to [deleted] (#1,175,911)

Play with the distances between the two until the image is clear and now you have a telescope. An important discovery as a single lens of the same power would be difficult to make and heavy to carry.

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mfb- t1_j28g4yn wrote

Magnification is not a property of the glass alone, it depends both on the glass and the distances. You can choose the magnification based on these distances (three in this case: object to first glass, between glasses, second glass to eye or screen).

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