Parts and Functions of the Microscope PDF

Parts and Functions of the M icroscope  It is a scientific study of living things. It Biology covers a wide range of topics and consists of various branches (subdisciplines).  It is a tool that is used to see organisms or...

Parts and Functions of the M icroscope  It is a scientific study of living things. It Biology covers a wide range of topics and consists of various branches (subdisciplines).  It is a tool that is used to see organisms or objects that are too small to be seen by the naked eye. The microscope makes these small objects look bigger.  Zacharias and Hans Janssen They started experimenting using lenses. They got a tube and put lenses on each end and started observing objects. The Janssen brothers made a very important discovery, a compound microscope that uses two or more lenses. 4  Antonie van Leeuwenhoek He was the first to observe bacteria, yeasts, and red blood cells. He was able to describe colonies of protozoans teeming in a drop of rainwater, which he called animalcules. These breakthroughs earned him the title “Father of Microscopy” 5  Robert Hooke Spent much of his life working with microscopes, improving their design and capabilities. With this, he discovered tiny compartments in a tin slice of cork. He called these compartments “cell”. 6 Organisms that can be seen in the microscope are... Plant Cells Animal Cells Microorganisms 7  The scientist are using microscope to study the structure of the corona virus  M icroscopy It is the science of investigating very tiny organisms and small objects using the microscope.  M agnificatio n how It describes much larger an Add a main point object appears Briefly elaborate on what you want to when viewed. discuss.  A B C Resolution It is the capacity of a microscope to distinguish small gaps between two separate points which human cannot distinguish.  A B C Resolution It is the capacity of a microscope to distinguish small gaps between two separate points which human cannot distinguish. Low resolution High resolutio  Compound M icroscope Is an optical microscope that uses visible light to form an image. It uses glass lenses to magnify and resolve images. 13  Compound M It uses TWOicroscope or more double convex lenses to magnify the object. 14 Three major parts of the microscope: 1. 2. 3. Magnifying Illuminating Mechanical parts M agnifying Parts The part that make the specimen looks bigger. 1. Eyepiece/Ocular lens the viewer looks Where and see the magnified image of the speciem. Eyepiece contains the ocular lens and usually has a magnification of 10x. 2. Objective lenses The major lenses used for specimen visualization/magnificati on. Objective Lenses of the M icroscope: A. Low Power B. High Power Objective – C. Oil Objective – Immersion it has a it has a magnification Objective – magnification power of 10x. It power of 40x, it has a used to see the it is used to magnification general view power of 100x. outlined of the structures It requires the specimen. from a larger use of special perspective. oil. 19 Illuminating Parts The parts of the microscope that supply and regulate light towards the specimen. 1. M irror It reflects light from an external light source up through the bottom of the stage which illuminates the specimen. 2. Iris Diaphragm A wheel-shaped device that controls the amount of light that reaches the specimen. 3. Stage It collects and focuses the light from the mirror to the specimen. M echanical Parts These parts are used for support and in adjusting the different parts of the microscope. 1. Body tube It holds the eyepiece lens and connects them to the objectives lenses. 2. Revolving Nosepiece It holds the different objectives lens and facilitates the changing of objectives. 3. Adjusting knobs They are used to focus the microscope. 3. Adjusting knobs A. Coarse adjusting knob – it moves the body tube and low power lenses closer or farther away from the stage to view the image of the specimen. 3. Adjusting knobs B. Fine adjustment knob – it is used to bring the specimen into sharp focus to show clearly the detailed parts of the specimen. 4. Stage A flat surface where the mounted slide is placed. 5. Stage clips It holds the specimen slide in place. 6. Base Serves as the support of the whole microscope. 7. Arm It is the basic frame to which the base, body, and stage are attached. 8. Inclination joint It allows the user to tilt the microscope for more comfortable view. Thank you!