Microscopy
How to see the little ones
, How small are they?
• Viruses - 50-100 nanometers
• Bacteria - 1-5 micrometers
• Eukaryotic cells - 10-100 micrometers
, Two major aspects of microscopy:
Magnification and Resolution
• Magnification - an ability to make objects
appear larger, expressed as a number
combined with X (times).
• Example: A microscope magnifies a
specimen by 100X. (This means the
object looks 100 times as large as it really
is).
How to see the little ones
, How small are they?
• Viruses - 50-100 nanometers
• Bacteria - 1-5 micrometers
• Eukaryotic cells - 10-100 micrometers
, Two major aspects of microscopy:
Magnification and Resolution
• Magnification - an ability to make objects
appear larger, expressed as a number
combined with X (times).
• Example: A microscope magnifies a
specimen by 100X. (This means the
object looks 100 times as large as it really
is).
