Why does the author mention “a telescope” as part of the discussion of microscopes? A. To show how microscopes and telescopes are different B. To emphasize the importance of magnification in all optical devices C. To explain how the development of the microscope depended on the invention of...
1670s: Antonie van Leeuwenhoek, a Dutch scientist, begins his work developing better microscopes that allow scientists to see cells and the organelles they contain more clearly. 1839: German scientists Matthias Schleiden and Theodor Schwann describe the first two parts of the cell theory.Schleiden st...
Why do animals' eyes reflect light? Why are there no blue cones in the fovea? Why does light refract in a prism? Why are concave mirrors used in telescopes? Why are there no rods in the fovea? Why are modern light microscopes better than the ones leeuwenhoek used? ...
Why is the maximum resolution and magnification of a light microscope less than the electron microscope? Explain why the resolution achieved by electron microscopes are so much greater than those achieved by light microscopes. Despite the relatively low magnification capabilities of a light mi...
When a light beam passes from an optically denser medium to an optically less dense medium(and vice versa),the direction and the speed of light changes. My question is why light must bend when it goes from one medium to another. Say,it goes from air to water. Water is optically denser...
Petrographic observations (with the help of polarizing microscopes) have also been used in paleoanthropology and archaeology to describe and constrain quartz-rich rock characteristics. However, studies on the raw materials at the Olduvai sites usually failed to recognize and/or misinterpret diagnostic roc...
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Microscopy and macro are more esoteric and harder to do for some, and they often expose imagery that can be strange or "icky" to the uninitiated. It has its own beauty, but it can be an acquired taste. Microscopes also have the
Others point to the towering challenge of either repairing a human brain or scanning one in order to upload it. Brazilian scientist Miguel Nicolelisemphasizesthat the task of scanning a human brain would require, with today’s technology, “a million electron microscopes running in parallel for ten...
Although they didn’t have proof at the time didn’t mean they were wrong, eventually what they felt was confirmed by tests and microscopes. No physical evidence doesn’t mean no possibility of the idea or situation. The thoughts and ideas of the doctors or scientists was proof of what was...