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What Happens If You Increase The Diameter Of A Telescope? [Solved]

The larger the lens, the more light the telescope can gather. Doubling the diameter of the lens increases the light gathering power by a factor of 4. Brightness of images also depends on how big an area the image light is spread over. The smaller the area, the brighter the image.

Video to show telescope resolution at different appertures.

This is a diagramatical video to show how bigger

By increasing the diameter of the objective of telescope, we can increase its range, why ?

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Telescope vs Microscope

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