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.
What are the differences between a light microscope a compound microscope a stereoscopic light microscope a transmission electron microscope and a scanning electron microscope? A light microscope uses a series of lenses to focus light allowing small objects to appear larger.
Electron Microscopes use electrons and not photons (light rays) for visualization. The first electron microscope was constructed in 1931, compared to optical microscopes they are a very recent invention.