Presentation on theme: "02 Microscope. A B Carrying a Microscope Return the lowest power objective in place Wrap the cord around the base Return dustcover Storing The Microscope."— Presentation transcript:
Return the lowest power objective in place Wrap the cord around the base Return dustcover Storing The Microscope
Use lens paper on all glass parts of the microscope. Clean oil immersion lens with chemicals provided by your instructor Cleaning the Microscope
Parts of the Microscope Fine adjustment knob Stage Stage clips Aperture Diaphragm Light Base Ocular Body tube Nosepiece Objective lenses (10, 40, 100x) Arm Course adjustment knob
Microscope Parts A.Ocular B.Body tube C.Head D.Revolving nose piece E.Objective F.Arm G.Stage H.Diaphragm I.Lever to move stage clip J.Course adjustment K.Fine adjustment L.Light source M.Base
Using the microscope Always observe using the LOWEST POWER objective first. Focus using the COARSE ADJUSTMENT KNOB to bring the object into focus. Bring the object into sharp focus by using the fine adjustment knob. Focus, and then move to a higher power objective, if needed. Use only the FINE ADJUSTMENT KNOB when using the HIGHEST (longest) POWER OBJECTIVE. Keep both eyes open to reduce eyestrain. Determine total magnification of the object by multiplying the power of the ocular (10x) the power by the power of the objective.
Preparing a slide Using a pipet or dropper, add a drop of water or another solvent to a clean microscope slide. Then, place the specimen in the water. Place the edge of a coverslip on the slide so that it touches the edge of the water. Slowly lower the coverslip to prevent the formation of air bubbles.
Microscope Quiz 1.Which objective uses oil? 2.If your ocular is 10x and your objective is 40x what is the total magnification of your image? 3.Why do you need a cover slip and how do you avoid an air bubble? 4.Where do you dispose slides?