| 1. | The diameter of the objective lenses is unimportant for field of view.
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| 2. | This would denote 10 times magnification with a 50 mm objective lens.
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| 3. | :Not much of an answer but my guess would be the objective lenses.
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| 4. | He created many objective lenses, mirrors, and prisms of various sizes and purposes.
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| 5. | The stages are the condenser lenses, the objective lenses, and the projector lenses.
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| 6. | Looking up through the objective lens revealed a giant blinking eyeball.
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| 7. | After the electrons have left the sample they pass through the electromagnetic objective lens.
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| 8. | This was especially true in refracting telescopes, before the invention of achromatic objective lenses.
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| 9. | Some high performance objective lenses may require matched eyepieces to deliver the best optical performance.
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| 10. | Microscopes were first developed with just two lenses : an objective lens and an eyepiece.
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