Slide 1

Brainteaser The more of them you take, the more you leave behind. What are they? Answer Here! Slide 2 Today you will learn The 3 different types of microscopes used in Biology. How to care for a microscope The parts of the microscope How to use a microscope Slide 3 Introduction to the Microscope Slide 4 3 Main Types of Microscopes Stereo Dissecting Scope Compound Light Microscope http://www.udel.edu/biology/ketcham/microscope/scope. htmlhttp://www.udel.edu/biology/ketcham/microscope/scope. html Electron Microscope http://school.discoveryeducation.com/lessonplans/interact /vemwindow.htmlhttp://school.discoveryeducation.com/lessonplans/interact /vemwindow.html Slide 5 Stereo Dissection Microscope Used for low magnification of three-dimensional objects- objects larger or thicker than the compound microscope can accommodate. Magnify from about 10X up to 40X Slide 6 Compound Light Microscope Light passes through lenses to magnify image up to 1000X Can observe living cells Slide 7 Electron Microscope Uses a beam of electrons to magnify image > 1000X Kills cells being observed Slide 8 3 Main Types of Microscopes Stereo Dissecting Scope Compound Light Microscope http://www.udel.edu/biology/ketcham/microscope/scope. htmlhttp://www.udel.edu/biology/ketcham/microscope/scope. html Electron Microscope http://school.discoveryeducation.com/lessonplans/interact /vemwindow.htmlhttp://school.discoveryeducation.com/lessonplans/interact /vemwindow.html Slide 9 Always carry with 2 hands Only use lens paper for cleaning Do not force knobs Always store covered Keep objects clear of desk and cords Slide 10 Slide 11 Whats my power? To calculate the power of magnification, multiply the power of the ocular lens by the power of the objective. What are the powers of magnification for each of the objectives we have on our microscopes? Slide 12 1.The magnification written on the ocular lens (eyepiece) is _____________ 2. The magnification on the Scanning objective ___________ Low Power Objective ___________ High Power Objective ___________ 3. What is the total magnification for each lens (multiply ocular times objective) Scanning _____________ Low Power ______________ High Power ________________ Magnification Slide 13 Place the Slide on the Microscope Use Stage Clips Click Nosepiece to the lowest (shortest) setting Look into the Eyepiece Use the Coarse Focus Slide 14 Follow steps to focus using low power Click the nosepiece to the longest objective Do NOT use the Coarse Focusing Knob Use the Fine Focus Knob to bring the slide What can you find on your slide? Slide 15 How well did you do today? If the objective lens on your microscope is set at a magnification of 4x (scanning power), what is the total magnification of the image you are viewing? _________ A = 4x B = 40x C = 400x D = 10x Slide 16 http://school.discoveryeducation.com/lessonplans/inter act/vemwindow.html Practice