Micrsocpy

• Microscopy


  The study of objects using a microscope
• Cells are Studied Using Microscopes
• Microscopy


  1. Light is used to form an image of a specimen and magnify it

  2. Electronic microscopes use electrons instead of light to form an image

  3. They have a much higher magnification than light microscopes

  4. They also have a higher resolution (ability to distinguish between fine details)
• Electron microscopes let us see much smaller things in more detail, like the internal structures of cells
• Magnification


  The ratio of the size of the image to the size of the real object
• Calculating magnification


  magnification = image size / real size
• Specimen width


  Image width = 5 mm
• Standard form


  A way to write very big or small numbers with lots of zeros in a more manageable way, using powers of 10
• 0.0025 mm can be written as 2.5 x 10^-3 mm in standard form
• When working with microscope images, it's important to keep track of the units