microscopy

• Electron microscopes have a higher resolution.
• Electron microscopes use electrons to form an image.
• Light microscopes use light to magnify.
• magnification =

  image size / real size
• Light microscopes use light and lenses to form an image of a specimen and magnify it.
• What does magnify mean?

  To make something bigger.
• Electron microscopes use electrons instead of light to form an image.
• Electron microscopes have a mich higher magnification than light microscopes
• Which type of microscope has a higher magnification?

  Electron
• Which type of microscope has a higher resolution?

  Electron microscope
• What is resolution?


  The ability to distinguish between two points.
• A higher resolution gives a what?

  sharper image
• What do you add a drop of to a clean slide?

  water
• What solution do you add to the specimen after it is added to the slide?

  iodine solution
• Iodine solution is a stain
• What is a stain?


  Something that is used to highlight objects in a cell by adding colour to them.
• What is placed onto a slide with a specimen stained with iodine before being put under a microscope?

  a cover slip
• What do you need to be careful of when adding a cover slip to a specimen?

  Air bubbles