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Microscope
If you damage it then it wont work
why it is important to take good care of a microscope?
Because it is too expensive to mishandle and replace it.
The simple microscope was very important in discovering cells. The compound microscope gave even more information.
its called the dam microscope botch
The first very primitive microscope is attributed to Hans Lippershey, a Dutch spectacle maker, who is often credited with inventing the compound microscope in the early 1600s. However, it was later improved upon by other scientists, such as Zacharias Janssen, who is sometimes also associated with its invention. These early microscopes used multiple lenses to magnify small objects, laying the groundwork for future developments in microscopy.
Pi is very important for finding circumfrences and area's of circles.
Electron microscope
Microscopes magnify small images so that they can be seen by biological human eyes.
Early chemists knew that atoms were very small but had no way of actually finding their mass.
It is very difficult to identify an insect. You need a microscope. For example, the detailed structure of the mouthparts if often important.