lesson 1 microscopy

• Who was the first person to describe a cell?

  Robert Hooke.
• What book did Robert Hooke publish in 1665?

  Micrographia: or Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses.
• What did Hooke call the little chambers he identified in cork plants?

  Cells.
• What was unique about Hooke's microscopes?

  They achieved magnifications of thirty times, making them the last word in seventeenth-century optical technology.
• What equipment do we need to observe microscopic objects?

  Microscopes.
• How is the total magnification of an image calculated when using a microscope?

  Total magnification = eyepiece magnification x objective magnification.
• What is resolution in microscopy?

  Resolution is the smallest distance between two objects where the objects are seen as two different objects.
• What is the advantage of electron microscopes over light microscopes in terms of magnification and resolution?

  Electron microscopes allow for much higher magnifications without lowering the resolution.
• What is the maximum magnification of a light microscope?

  1500x
• How do you position a microscope for use?


  Position the microscope so the handle is facing you.