Types of microscopes

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1. How so SEM's work?

  • They scan a beam of electrons across the specimen. This knocks off electrons from the specimen, which are gathered in a cathode ray tube to form an image.
  • They screen a beam of electrons across a specimen. This knocks off the electrons from the specimen, which are gathered in a cathode ray tube to form an image.
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2. What is the benefit of a higher resolution?

  • You get a more detailed image, meaning you can look at more organelles.
  • You get a coloured image.
  • You get a brighter image.

3. What are the two types of electron microscopes called?

  • Transfer electron microscope and Scanning electron microscope.
  • Transmission electron microscopes and Scanning electron microscope.
  • Transmission electron microscope and Screening electron microscope.

4. How does an Electron microscope work?

  • They use electrons to form an image.
  • They use light to form an image.

5. How do TEM's work?

  • They use electromagnets to focus a beam of electrons, which is then transmitted through the specimen.
  • They use electricity to focus a beam of electrons, which is then transmitted through the specimen.

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