Chapter One micro lab

an instrument that magnifies images using two lens system

Initial magnification occurs

Where final magnification occurs. At the top of the tube magnifies the image formed be the objective lens.

10x (yellow) low power lens

4x (red)

40x (blue)

10x (white)

The magnitification of the lenses X10

focuses the ligt on a small area above the stage

Controls the amount of light that enters the condenser (underneath the stage)

• 1. drop of water on slide
• 2. place specimen in the water
• 3. place the edge of the coverslip so it touches the water with a tweezers.
• 4. slowly lower the coverslip to prevent forming and air bubble.

Singular, coccus (little circles)

Rods or Bacilli, singular

a single, large, plural

numerous, small spirilla

allows you to turn the body tube to share with a partner without using the base around.