Microscope ppt download

Microscopy Compound Microscope Microscopes - Microscopes Biology Microscopes - Microscopes Light microscopes have been around for about years. Microscopy - In lab, use a compound microscope-multiple magnifying lenses Electron Microscope. Two types of Electron Microscopes In lab, use a compound microscope-multiple magnifying lenses Light Microscope a device that uses light to produce an enlarged view of an object An example of a simple Microscopes - Microscopes The Compound Microscope A compound Microscope is the type of microscope that most people think of when they hear the word Microscope.

Microscopes The Compound Microscope A compound Microscope is the type of microscope that most people think of when they hear the word Microscope. Microscope - Compound microscope uses compound lenses and light to magnify objects Robert Hooke and Anton van Leeuwenhoek were pioneers in early microscope development Compound microscope uses compound lenses and light to magnify objects Microscopes - Microscopes Microscope: A tool used by people to enlarge microscopic objects Microscopic: extremely small, cannot be seen without a microscope Lens- a curved Microscopes Microscope: A tool used by people to enlarge microscopic objects Microscopic: extremely small, cannot be seen without a microscope Lens- a curved Do Now: Pass up Wednesday s lab Practice conversions.

Topic: Microscope Aim: Explain the structure of a compound microscope. Microscopes - Microscopes Development of the Microscopes Development of the Microscopes - Microscopes 4th Grade NMGK Project 76 Dissecting Microscope low magnification approximately 2 to 50 times larger than life used to see some detail on large Microscopes 4th Grade NMGK Project 76 Dissecting Microscope low magnification approximately 2 to 50 times larger than life used to see some detail on large Microscopes - Microscopes What is a Microscope?

A device for forming a magnified image of a small object. An optical instrument used for producing a magnified image of a small object.

Microscopes What is a Microscope? Microscopes - Microscopes Development of the microscope Anton van Leeuwenhoek Father of Microbiology Made his own lenses some as powerful as the microscopes we use in class Type Microscopes Development of the microscope Anton van Leeuwenhoek Father of Microbiology Made his own lenses some as powerful as the microscopes we use in class Type Microscopes - Microscopes Karen J.

Microscopes Karen J. The Microscope - The Microscope Mr. Ryan 6th Grade The History Many people experimented with making microscopes Was the microscope originally made by accident? Most people were The Microscope Mr. View by Category Toggle navigation. Products Sold on our sister site CrystalGraphics.

This condenser lens on the light microscope splits a light beam and throws the light rays slightly out of phase. The separated beams of light then pass through and around the specimen, and small differences in the refractive index within the specimen show up as different degrees of brightness and contrast. Uses: Phase-contrast microscopy is especially useful for studying microbial motility, studying eukaryotic Cells, determining the shape of living cells, and detecting bacterial components such as endospores and Inclusion bodies that contain poly--hydroxyalkanoates e.

Phase contrast microscope Macronucleus Micronucleus Paramecium Phase contrast microscope Rhodospirillum rubrum Fluorescence microscope It was developed by Haitinger and coons A fluorescence microscope differs from an ordinary brightfield microscope in several respects. It utilizes a powerful mercury vapor arc lamp for its light source. It employs three sets of filters to alter the light that passes up through the instrument to the eye.

Microbiological speciemen that is to be studied must be coated with special compounds that possess the quality of fluorescence. Such compounds are called fluorochromes. AuramineO, acridine orange, and fluorescein are well-known fluorochromes. Fluorescence microscope Uses: It is used to study the substance like chlorophylls, riboflavin, vitamin A, collagen which have the property of auto fluorescence. Some cellular components like cellulose, starch, glycogen, protein and Y chromosome can be made visible under this microscope by staining them with fluorochromes.

It used to identify Y chromosome to determine sex, determination of microbial cells in the infected tissue and to study the structure of proteins. Fluorescence microscope Bacillus subtilis Oral cavity Electron microscope In Knoll and Ruska invented first electron microscope.

The electron microscope uses a beam of electrons rather than visible light. The magnified image is visible on a fluorescent screen and can be recorded on a photographic film.

The drawback of the electron microscope is specimen are killed in order to view the cells or organisms. Images produced by electrons lack color, electron micrographs are always shades of black, gray, and white. Transmission electron microscopes are the method of choice for viewing the detailed structure of cells and viruses.

This microscope produces its image by transmitting electrons through the specimen. Because electrons cannot readily penetrate thick preparations, the specimen must be sectioned into extremely thin slices 20— nm thick and stained or coated with metals that will increase image contrast.

The darkest areas of TEM micrographs represent the thicker denser parts, and the lighter areas indicate the more transparent and less dense parts. Electron microscope TEM Electron microscope TEM Chlamydomonas Electron microscope SEM The specimen is placed in the vacuum chamber and covered with a thin coat of gold.

The electron beam then scans across the specimen and knocks loose showers of electrons that are captured by a detector. An image builds line by line, as in a television receiver. Electrons that strike a sloping surface yield fewer electrons, thereby producing a darker contrasting spot and a sense of three dimensions. The resolving power of the conventional SEM is about 10 nm and magnifications with the SEM are limited to about 20,x. Light Vs Electron microscope Uses On SlideEgg, we provide our users with immense benefits where you can edit your nodes and their colors as per your wish, which even more pulls the audience to your presentation.

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