what are the different parts of microscope and their function?
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['Eyepiece Lens: the lens at the top that you look through. ... ', 'Tube: Connects the eyepiece to the objective lenses.', 'Arm: Supports the tube and connects it to the base.', 'Base: The bottom of the microscope, used for support.', 'Illuminator: A steady light source used in place of a mirror.']
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['Cell Wall. ... ', 'Cell Membrane. ... ', 'Cytoplasm. ... ', 'Ribosomes.']
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['The Eyepiece Lens. ••• ... ', 'The Eyepiece Tube. ••• ... ', 'The Microscope Arm. ••• ... ', 'The Microscope Base. ••• ... ', 'The Microscope Illuminator. ••• ... ', 'Stage and Stage Clips. ••• ... ', 'The Microscope Nosepiece. ••• ... ', 'The Objective Lenses. •••']
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A simple microscope uses the optical power of single lens or group of lenses for magnification. A compound microscope uses a system of lenses (one set enlarging the image produced by another) to achieve much higher magnification of an object.
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['Cytoskeleton. network of fibers extending throughout the cytoplasm and composed of microtubules, microfilaments, and intermediate filaments.', 'Function of Cytoskeleton. ... ', 'cell motility. ... ', 'motor proteins. ... ', 'Microfilaments (Actin) ... ', 'Microfilaments (Actin) Function. ... ', 'Intermediate Filaments. ... ', 'Intermediate Function.']
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The biggest advantage is that they have a higher resolution and are therefore also able of a higher magnification (up to 2 million times). Light microscopes can show a useful magnification only up to 1000-2000 times. This is a physical limit imposed by the wavelength of the light.
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3. Optical microscopes use a simple lens, whereas electron microscopes use an electrostatic or electromagnetic lens. ... Optical microscopes use photons or light energy, while electron microscopes use electrons, which have shorter wavelengths that allows greater magnification.
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The simplest optical microscope is the magnifying glass and is good to about ten times (10x) magnification. The compound microscope has two systems of lenses for greater magnification, 1) the ocular, or eyepiece lens that one looks into and 2) the objective lens, or the lens closest to the object.
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['To further magnify the intermediate image so that specimen details can be observed.', 'Focuses the light rays from the primary to form a sharp image on the retina of the eye.']
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A comparison microscope combines two microscopes into one unit, allowing the viewer to see what is under each of the lenses at the same time. This is particularly helpful for examining a piece of evidence with a known sample, since the two samples can be examined side by side.
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Microscopes are used to produce magnified images. ... light microscopes are used to study living cells and for regular use when relatively low magnification and resolution is enough. electron microscopes provide higher magnifications and higher resolution images but cannot be used to view living cells.
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['Parts of the Eye. Here I will briefly describe various parts of the eye:', 'Sclera. The sclera is the white of the eye. ... ', 'The Cornea. The cornea is the clear bulging surface in front of the eye. ... ', 'Anterior & Posterior Chambers. The anterior chamber is between the cornea and the iris. ... ', 'Iris/Pupil. ... ', 'Lens. ... ', 'Vitreous Humor. ... ', 'Retina.']
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The maximum magnification of light microscopes is usually ×1500, and their maximum resolution is 200nm, due to the wavelength of light. An advantage of the light microscope is that it can be used to view a variety of samples, including whole living organisms or sections of larger plants and animals.
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Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes. Electron microscopes can be used to examine not just whole cells, but also the subcellular structures and compartments within them.
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['Cell membrane (Plasma membrane) ... ', 'Cytoplasm (Cytosol) ... ', 'Nucleus. ... ', 'Ribosomes. ... ', 'Rough endoplasmic reticulum. ... ', 'Smooth endoplasmic reticulum. ... ', 'Golgi apparatus. ... ', 'Transport vesicle.']
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['STRUCTURAL COMPONENTS.', 'OPTICAL COMPONENTS.', 'Eyepiece or Ocular is what you look through at the top of the microscope. ... ', 'Eyepiece Tube holds the eyepieces in place above the objective lens. ... ', 'Objective Lenses are the primary optical lenses on a microscope. ... ', 'Nosepiece houses the objectives.']
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The main difference between light microscope and electron microscope is that beam of electrons is used for magnifying the image of an object while visible light is used in the light microscope to magnify images of tiny areas of materials or biological specimens.