PDF-Microscopes Table of Contents WHAT IS A MICROSCOPE

3 WHAT IS MICROSCOPY. jlaborg Microscopes Microscopes Microscopes Microscopes Microscopes Microscopes Microscopes brPage 2br Thomas Jefferson National Accelerator Facility Office of Science Education httpeducationjlaborg Microscope Homework Bring in objects to experiment 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. . Compound Light Microscope. Electron Microscopes. (TEM and SEM). Overview of Microscopes. Magnification. – increase of an object. ’. s apparent size. Total . magnification:. . mag. . of eyepiece x mag. of objective lens. History of the Microscope. Hans and Zacharias Janssen- (1595) Eyeglass crafters- Magnify object 3-10x . Robert Hooke- (1655) Observed pores on corks and called them "cells". History of the Microscope. Introduction to cells. Cells form the parts of an organism and carry out all of its functions.. Cells are the basic units of structure and function in living things.. What are cells?. The structure of a living thing is determined by the amazing variety of ways its cells are put together.. Optical Microscope. [photograph]. . Retrieved from https://. commons.wikimedia.org. /wiki/File:Optical_microscope_nikon_alphaphot_+.jpg. Microscopes:. Microscopes are some of the most commonly used pieces of lab equipment. - .  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. How does science progress?. A clue . …. T. hink about these words by Newton:. “. If I have seen further, it is because I have stood on the shoulders of giants. .”. What is Newton really saying?. Microscope Review The diagram represents a cell in the field of view of a compound light microscope. In which direction should the slide be moved on the microscope stage to center the cell in the field of view 1. When moving your microscope, always carry it with both hands. Grasp the arm with one hand and place the other hand under the base for support.. How To Use a Microscope. 2. Turn the revolving nosepiece so that the lowest power objective lens is clicked into position (This is the shortest objective lens).. . Electron microscopy (EM) . is an electron beam which is focused into a small probe across the surface of a specimen . . The first electromagnetic lens was developed in 1926 by . Hans Busch. .. . Introduction The applications of microscopy in the forensic sciences are almost limitless. This is due in large measure to the ability of microscopes to detect, resolve and image the smallest items o - Compound microscope. - Dissecting microscope. - Scanning electron microscope (SEM). - Transmission electron microscope (TEM). The compound microscope. A microscope . : . It is a tool that is used to study things . Science. Learning intention. To know how microscopes have advanced over time and to be able to . compare the advantages and disadvantages of the different types of microscopes.. You will need. •  A pen and paper..