Exam-style question
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Why can electrons be used for microscopy?.
- A.Electrons have a shorter wavelength than visible light.
- B.Electrons are less massive than protons.
- C.Electrons can travel faster than light.
- D.Electrons do not carry any charge.
Model answer
What a good answer should say
- Electrons have a shorter wavelength than visible light.
Explanation
Why this works
The cause is that electrons have a shorter wavelength than visible light, which allows for higher resolution in microscopy. The mechanism is that shorter wavelengths can resolve smaller details due to the wave nature of particles.
The effect is improved resolution in electron microscopes, leading to clearer images of tiny structures. The consequence is that scientists can observe finer details in specimens that are not visible with optical microscopes.
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