What Is the Explanation for How a Modern Transmission Electron

question 36

Multiple Choice

What is the explanation for how a modern transmission electron microscope (TEM) can achieve a resolution of about 0.2 nanometers, whereas a standard light microscope has a maximum resolution of about 200 nanometers?

• A) Glass lenses in light microscopes refract light, which reduces resolution.
• B) Contrast is enhanced by staining with atoms of heavy metal.
• C) Electron beams have much shorter wavelengths than visible light.
• D) The electron microscope has a much greater ratio of image size to real size.