SC.912.N.1.1 Bryan Suarez Hansel Garcia Charles Period 5 THE MICROSCOPES OF SCIENCE COMPOUND MICROSCOPE I.A compound microscope is a microscope which uses multiple lenses to collect light from the sample and then a separate set of lenses to focus the light into the eye or camera. II.Heavier, more expensive than simple microscopes due to the increased number of lenses used in construction. III.The main advantages of multiple lenses are improved numerical aperture, which means reduced chromatic aberration and exchangeable objective lenses to adjust the magnification. DISSECTING MICROSCOPE I.Also known as Stereo Microscope. II.Designed for low magnification observation. III. It uses two separate optical paths with two objectives and two eyepieces to provide slightly different viewing angles to the left and right eyes. IV.The stereo microscope is often used to study the surfaces of solid specimens or to carry out close work such as dissection, microsurgery, watch-making, circuit board manufacture or inspection, and fracture surface. COMPOUND MICROSCOPE VISUALS 1.Eye piece 2.Objective lenses x objective 4.Coarse focus 5.Fine focus 6.Mechanical stage 7.Illuminator 8.Iris Diagram 9.Stage controls DISSECTING MICROSCOPE VISUALS Scientific Standards The standards are separated in sections: Primary sources Secondary sources Tertiary sources Primary Sources Conference Papers Correspondence Dissertations Diaries Interviews Lab Notebooks Notes Patents Proceedings Studies or Surveys Technical Reports Theses Secondary Sources Criticism and Interpretation Dictionaries Directories Encyclopedias Government Policy Guide to Literature Handbooks Law and Legislation Monographs Moral and Ethical Aspects Political Aspects Public Opinion Reviews Social Policy Tables Tertiary Sources Directories Yearbooks Bibliography of bibliographies Inference and Observation Identify inference made form observations With prior knowledge that nitrogen may help plants grow more, which you learned form an observation. You can infer that the reason why one of your guava plant is grown more than your second plant may be because the soil has more nitrogen. Merits of Scientific Explanations Scientific explanations tend to differ from scientist to scientist. They all have different interpretations. Because of the following reasons: Politics Prejudice Bias weighting Of course more famous, well know scientists explanations will be weighted more than an unknown scientists. Explanations produced by others This both has a good and bad to it: Its good as it allows different people with different backgrounds and ideas and believes to give their own input in explanations. It can also be bad as bias can lead to making false or misleading results. Science Investigation Investigate the affect of soda on your teeth you will need Materials: 9 Eggs 3 sodas of your choice 9 plastic cups Science investigation Procedures: 1. Fill 3 cups each with a different soda 2. Place 1 egg in each soda 3. Wait 48 hours 4. Retrieve egg 5. Examine texture color and strength of the egg shell. 6. Record results 7. Retest the experiment 3 times and record those results 8. Set up data