Question 5
7 Put the lowest power objective lens in place. Use the coarse adjustment wheel to move the objective lens as far away from the stage as possible. Place a strand of hair on the stage, so that part of it is over the hole in the stage. Turn the coarse adjustment wheel to bring the image into focus.
8 Rotate the lenses so that a higher-power objective lens is now above the slide. Then use the fine adjustment wheel to bring the image into focus. Do not use the coarse adjustment wheel (since this may push the objective lens into your specimen).
Why do we use the coarse adjustment wheel first?
8 Rotate the lenses so that a higher-power objective lens is now above the slide. Then use the fine adjustment wheel to bring the image into focus. Do not use the coarse adjustment wheel (since this may push the objective lens into your specimen).
Why do we use the coarse adjustment wheel first?
