PPT-Lec1: Introduction to the Microscope

What Is Microscope It is an instrument which deals with too small organisms that they cannot be seen distinctly with the naked eye Microscopes provide the observer with enhanced resolution ability to observe two nearby objects as distinct objects . Microscopes are delicate and expensive instruments they should be handled with utmost care Before you use the microscope your instructor will explain its proper use Following are rule s that will protect the microscope and insure that you can make m POLARISED LIGHT MICROSCOPE . Designed to observe optically anisotropic specimen (BIREFRINGENCE SPECIMEN). Equipped with POLARISER and ANALYZER . Works on the principle of INTERFERENCE . COMPONENTS OF POLARISED . Care. Parts. Focusing. Types of Microscopes. Light Microscope - .  the models found in most schools, use compound lenses to magnify objects. The lenses bend or refract light to make the object beneath them appear closer.. Learning Targets: . I will learn about the proper care of . a compound microscope. I will be able to prepare my own slide (wet mount).. I will learn how to focus on a specimen using each of the lenses.. Basics. By: Kaitlyn Schroeder; ETEAMS 2014. Modified from . Trimpe. . 2005 http://sciencespot.net/. 1. Microscope Basics . Uncover the microscope in front of you and follow along with the lecture. . From its humble beginnings the microscope has undergone numerous revisions since Leeuwenhoek’s day. But its usefulness has certainly not diminished. Numerous types of Microscopes are currently being used. Visit the following for a more detailed description of them. . Instrument used to make very small objects appear larger. Resolution. .  how clear an image is. . Magnification.  how much larger an object appears. Field of view .  area that you see through the lens. Care. Parts. Focusing. Types of Microscopes. Light Microscope - .  the models found in most schools, use compound lenses to magnify objects. The lenses bend or refract light to make the object beneath them appear closer.. Janice E. . Reutt-Robey. , University of Maryland College Park, DMR 0520471. A microscope technique called “Kelvin probe microscopy” (KPM) is used to map the differences in the electrical potential on the surface of graphene on silicon carbide, shown here as different colors. KPM identifies single layer graphene (SLG), bilayer graphene (BLG), and two types of interfacial layer (IL1 and IL2). . By: Eric Zunica. NEM 3002 – Principles of Nematology . Entomology and Nematology Department. Introduction – . How to build a $1 dollar laser microscope. How to build a $4 dollar smartphone microscope. How to Focus on Specimen. Turn on light source on high. Turn the objective to low (4x). Lower the objective lens so that it is close but not touching the slide. Center the image by moving the stage. Adjust the diaphragm for optimum light. Light Microscope. Simple – uses a single lens. . Compound – uses a set of lenses or lens systems (this is the type of microscope we use in class, it has the eyepiece lens (ocular) and the objective lens). - .  the models found in most schools, use compound lenses to magnify objects. The lenses bend or refract light to make the object beneath them appear closer.. Common magnifications: 40x, 100x, 400x. October , 2017. Background Information. The microscope is one of the most commonly used instruments in the medical colleges, and in clinical laboratories. Students of physiology use it in the study of morphology of blood cells and in counting their numbers. .