Mohs Hardness Scale Lab Lancaster High School Hayhurst Page 3 Analysis and Conclusion For each item below, select the letter that labels the correct part of the image. _____ 1. Mineral cannot scratch glass but scratches a fingernail. _____ 2. Mineral scratches glass but is scratched by quartz. _____ 3. Mineral scratches quartz and topaz. _____ 4.
Difference between Electron Microscope and Light Microscope. The compound light microscope focuses visible light through a specimen. Different regions of the object scatter the light differently, producing an image. The use of light microscope is limited. A limit of a light microscope is that the user can view only two dimensional plane of the specimen at a time. Electron microscope is a device for forming greatly magnified images of objects by means of electrons. Electron microscope serves primary two purposes: i) the visual examination of structures too fine to be resolved with ordinary, or light microscopes, and ii) the study of surfaces that emit electrons.
Various types of microscopes are available for use in the microbiology laboratory. The microscopes have varied applications and modifications that contribute to their usefulness. The light microscope. The common light microscope used in the laboratory is called a compound microscope because it contains two types of lenses that function to magnify an object. The lens closest to the eye is called the ocular, while the lens closest to the object is called the objective.