Which of the following would an electron microscope be used to measure?

Question

Quizplus · Accepted Answer

Electron microscopes are powerful tools for obtaining images of incredibly small objects that cannot be observed by regular optical microscopes. Electron microscopes are capable of imaging samples that are only several nanometers in size, such as thin polymer films. Biologists sometimes examine insects, but they generally do this with optical microscopes since the insects are so large. Aquatic samples cannot be used in an electron microscope because the technique is performed in a vacuum.

Which of the Following Would an Electron Microscope Be Used