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Name: m hariaczyi
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: Around 1993


Question:
How many organisms exist in the world today? What is the most powerful microscope that could be used for viewing organism?



Replies:
The most powerful microscope is called an electron microscope, which can be used for viewing entire organisms, although few organisms are small enough to see all of them at high magnifications allowed by this microscope. So most often its used to look at fixed sections of organisms. Since the electron microscope only works in a vacuum, with no air, you cannot look at live organisms. To do that, probably the most powerful microscope is called a Nomarski, or in technical terms, a "differential interference contrast" microscope. This is a modification of a normal light microscope that allows better contrast in living tissue. It is not any more powerful than a light microscope, and is much less powerful than an electron microscope, but it allows you to see living things much better.

profbill



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