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Bell Work 1-11-12 Write the questions and answers

Bell Work 1-11-12 Write the questions and answers. 1-11-12 1. What happens to the field of view as magnification increases? The field of view gets bigger         b. The field of view gets smaller c. The field of view stays the same          . Low power. High power Magnification.

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Bell Work 1-11-12 Write the questions and answers

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  1. Bell Work 1-11-12Write the questions and answers 1-11-12 1. What happens to the field of view as magnification increases? • The field of view gets bigger         b. The field of view gets smaller c. The field of view stays the same         

  2. Low power High power Magnification Stage opening Diaphragm lever

  3. Also locate the stage opening and diaphragm lever.

  4. Using a Microscope • Use coarse adjustment knob to lower the stage. • Turn the objective lenses so that the lowest power objective is over the stage opening. • Adjust diaphragm so that the largest opening is aligned with the stage opening • Open stage clips and place slide on stage. • Turn on light

  5. Using a Microscope • Adjust slide so that the light is shining on the specimen intended for viewing • Use coarse adjustment knob to bring the specimen into focus. • Use fine adjustment to improve focus • DRAW WHAT YOU SEE AND TAKE NOTES

  6. Using a Microscope • Turn objective lenses so that the medium sized lens is over the stage opening. • DO NOT MOVE THE COARSE ADJUSTMENT KNOB • Use the fine adjustment knob to focus specimen • NOTE: the slide placement may need to be adjusted due to the change in field

  7. Using a Microscope • DRAW WHAT YOU SEE AND TAKE NOTES • Repeat for the high power magnification objective lens • When finished, carefully remove slide and return it to the slide case • Turn off microscope light • Cover microscope to keep it clean

  8. Microscope Care • Turn off light when not in use to save money • Never touch lenses with your fingers • Use a lens wipe to clean lenses • Carry microscopes by supporting the base and holding the arm • Be careful not to allow slide clip to break slide

  9. Lab Safety!!! • NO HORSEPLAY – automatic ZERO • Follow instructions and do not conduct personal experiments • Wear clothes toed shoes • NO food, GUM or drinks in the lab • When appropriate: wear goggles, wear gloves

  10. Other topics • Glass looks the same hot or cold • Waft to smell experiments • Know where exits are in case of fire • Know location of eyewash • Know safety symbols Safety Song from Rhythm, Rhyme, Results

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