petrographic microscope parts and functions pdf

The samples were cut and prepared into thin section slides. N is a function of crystallographic orientation in anisotropic minerals Öisotropic minerals.

Parts Of A Microscope With Functions And Labeled Diagram

This module provides an overview of the parts of a petrographic microscope including the purpose of each part.

. Microscope Parts and Functions Microscope One or more lenses that makes an enlarged image of an object. A fraternity of members willing to exchange experiences in all branches of micro scopical interest is the most valuable asset of the Club but the lending library of several thousand books on all. This is the lens that you look through at the top of the microscope.

Identify and describe the purpose of each part of a petrographic microscope. THE BEST AFFORDABLE PETROGRAPHIC MICROSCOPES OF THE 1970S TO 1990S by J. Eyepiece is the lens present at the top and is used to see the objects.

You can use the word bank below to fill in the blanks or cut and paste the words at the bottom. This is the lens that you look through at the top of the microscope. The petrographic microscope is a compound microscope which can work with plane polarised light meaning that it has some peculiarities.

The microscope is used in optical mineralogy and petrography a branch of petrology which focuses on detailed descriptions of rocks. Gregory McHone USA Introduction Relatively few of us are lucky enough to have and use a wide range of makes and models of microscopes. 872018 2 Simple Compound Stereoscopic Electron Simple Microscope Similar to a magnifying glass and has only one lens.

Below is a brief explanation of the more important parts of the microscope. Parts of a eyepiece arm stageclips nosepiece focusing knobs illuminator stage objective lenses head base Label the parts of the microscope. A petrographic microscope is used to observe a series of characteristics in a mineral which reflect its properties and allow us to identify it.

The substage assembly includes the condenser the lower polarizer light filters and diaphragms. 872018 3 Compound Microscope. The petrographic or polarizing microscope a compound instrument using plane-polarized transmitted light has been applied for over a hundred years as a standard tool in the examination of rock textures and optical properties of minerals.

Below is a brief explanation of the more important parts of the microscope. Function 1mirror c 2iris diaphragm e 3condenser lens f 4objective lens a 5eyepiece d 6sub stage condenser b objective lens magnifying power scanner 3x 4x 5x lpo 10x 12x hpo 40x43x 60x oio 97x 100x answers to questions. The following are the parts of microscope-.

The parts of the microscope that are located above the base but below the stage are called the substage assembly. This section provides an overview of the parts of a petrographic microscope and what each part does. It is also a good review for a student who has used a petrographic microscope in a previous class but needs a refresher on the anatomy of a microscope.

A petrographic microscope is a type of optical microscope used in petrology and optical mineralogy to identify rocks and minerals in thin sections. The compound microscope uses lenses and light to enlarge the image and is. Eye piece lens contains a magnification.

A petrographic microscope is a type of optical microscope that uses polarized light to identify rocks and minerals in thin section and to investigate microscopic textures and features that are present in minerals and rocks. Textures and most optical properties are normally observed in thin sections. Up to 10 cash back Petrographic microscope.

In this lecture JP S. Opaquebothterms are frequently used synonymouslyTheore microscope is similar to conventional petrographic microscopes in the systems of lenses polarizer analyzer andvarious diaphragms employed but differs in that its primary method ofillumination is a light source above the sample to allow examinationby lightreflected from polishedsurfaces. Figure 1 contains a diagram of a petrographic microscope similar to the type that we have in the lab.

The technique of polarizing microscopy exploits the interference of the split light rays as they. A study was carried out in parts of Abeokuta metropolis to determine the lithologic features present in the study area. This is always done with transmitted plane polarised.

An important membership in many parts of the world. The thin slides were viewed under a petrographic microscope and displayed as. Also called a polarizing.

Petrographic Microscope is very important tool to examine the optical properties of Earth Materials in thin section. Anisotropic materials act as beam splitters and divide light rays into two parts. Work-place microscope labs often have little variety in brands or models so as to reduce costs for maintenance and accessories.

Eologic mapping on the field is one of the main functions of a geologist which. The method is called polarized light microscopy PLM. Eyepiece or ocular lens.

The Microscope Parts and Use Name_____ Period_____ Historians credit the invention of the compound microscope to the Dutch spectacle maker Zacharias Janssen around the year 1590. Figure 1 contains a diagram of a petrographic microscope similar to the type that we have in the lab. Petrographic microscope parts and functions pdf - The Condenser and Substage Assembly.

Compound Microscope Definition Labeled Diagram Principle Parts Uses