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You guys are dumb

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Q: What did the telescope and barometer and microscope and thermometer help improve?
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How was the compound microscope invented?

Zacharias Janssen and his son Johannes (Hans), spectacle makers in Holland, are usually credited with inventing the first compound microscope in about 1590. (Hans Lippershey, a spectacle maker in the same city, Middelburg, Netherlands, also claimed credit for the invention but was perhaps more instrumental in the creation of the telescope.) It was said that the Zacharias Janssen was experimenting with ways to improve spectacles for people who needed greater magnification to improve eyesight, but nothing more specific than simply experimenting with multiple lenses can be associated with how he invented the compound microscope. It is worth noting that at the same time experimentation by other spectacle makers and lens makers was leading to the discovery of the telescope, another optical instrument of two lenses. Two decades later, Galileo Galilei built a compound microscope and changed the lens design lens (convex and concave lens).


What was Galiloe's invention?

Galileo didn't invent anything he just helped improve the telescope.


What is the function of a iris diaphragm in microscope?

The diaphragm reduces the light from under the stage which can improve the image contrast.


What is the function of Iris diaphragm of the microscope?

The diaphragm reduces the light from under the stage which can improve the image contrast.


Which parts of a compound light microscope with clean lenses should be used to improve the quality of the image being observed in the high-power field of view?

You would use the diaphragm and fine-adjustment knob.