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How do the characteristics of electron microscopes make them useful for studying cells?
Richard tElectron microscope is a very special tool which uses electron beam and invented by knoll and ruska which classified as transmission electron microscope uses 2d electron beam which clearly seen the internal structure of the cell and scanner electron microscope uses 3d electron beam which sweeps over the specimen.So it is very powerful with 5000 magnification of the object than a simple microscope.
What is the difference between ordinary microscope and electron microscope?
Magnification and resolution is in light microscope is about 500x and 0.2micro metres respectively than human eye.In e.microscope magnification is about 200,000x and resolution is 0.0005micro metres. You cannot observe live specimen through electron microscope. Lenses in light microscope are glass while e.microscope use magnetic lenses. E.microscope is relatively very larger than light microscope. You need special knowledge to handle electron microscope. You can observe through naked eye in e.microscope. A beam of electrons is sent through specimen in e.microscope.In light microscope a beam of light is sent. Electron microscope is very complex relative to light microscope.
True OR FALSE an electron microscope use light to view the details of a specimen?
False, electron microscopes use electrons to view specimens which have been treated with special metallic "dyes". (the clue is in the name)
How should you carry an electron microscope?
An electron microscope is a very large and heavy piece of equipment. It is too big for one person to carry. When it is moved it is separated into smaller components, some of which still require hoists and lifts to move.
Can you see the ribosomes under a light microscope?
No, ribosomes are too small to be seen with a light microscope. They are typically around 20-30 nanometers in size, which is below the resolution limit of a light microscope. Special techniques such as electron microscopy are needed to visualize ribosomes.
What type microscope is used to see cilia?
A light microscope is typically used to see cilia. By using a special technique called differential interference contrast (DIC) microscopy, cilia can be visualized with great clarity due to their unique structure and movement.
Can you see a chlorine molecule in a microscope?
No, a chlorine molecule is much smaller than the wavelength of visible light, so it cannot be seen with a standard light microscope. Special equipment like electron microscopes would be needed to visualize molecules at that scale.
What are Maines special features?
special features
Do seahorses have special features?
they do not have special features
What is the different between compound microscope and electron microscope?
Short Answer:It is fair to say that a light microscope and an electron microscope use the same principles, but the technical details are enormously different.The similar principles mean that both enlarge images of small object and have a lensing system to put an illuminating beam on a sample and another system to carry out the refocusing of the scattered beam into an enlarged image to be viewed.Beam: An electron microscope uses an electron beam to illuminate a specimen and produce the image.An optical or light microscope uses a light beam to illuminate a specimen and produce the image.Lenses: Lenses in an optical microscope are glass, though special types of glass improve performance, it is fundamentally the same material as common glass. Electron microscopes employ magnetic fields and electron fields to guide and focus the electron beam. Electron microscope this do not have physical lenses.Resolution: Electron microscopes have much better resolution and are capable of much higher magnification than light microscopes because the wavelength of the electrons is thousands of times smaller than the wavelength of light.Light microscopes can typically resolve structures to a fraction of a micron compared to electron microscopes which in practice achieve resolutions of a few nanometers. Practically, electron microscope can have almost a thousand times greater resolution than an optical microscope.Magnification: The useful magnification of an electron microscope is also in the range of a thousand times greater than an optical microscope.Samples: Optical microscopes can view basically anything that one can put under the objective, though special dyes are often used to enhance features of the sample. Electron microscopes typically require the sample to be in a vacuum so the electrons are not scattered by air. Samples frequently require special treatment with a metal coating such as gold because the high energy electrons are not strongly scattered by small atoms such as carbon, oxygen and nitrogen that are common to biological samples.The actual performance of any microscope depends on its design and lensing system and so significant variation exists in the above practical characteristics and performance of both types of microscopes can be enhanced in various ways.More Specifics:Electron microscopes use electrons to illuminate and form an image of a sample and light microscopes use light to illuminate and form an image of a sample.A microscope of either type is characterized by its magnification and resolving power. The magnification depends on the lensing system and can be increased to any degree, but the maximum useful magnification is limited by the resolving power.The resolving power of a microscope can not be better than the limits placed on it by the size of the wavelength of the illuminating beam. The smaller the wavelength, the smaller the structures that can be resolved in them image.Visible wavelengths of light are a few hundred nanometers. An electron microscope operates with electrons accelerated to a few hundred thousand electron volts of energy and with a wavelength in the range of few hundredths of an Angstrom.An electron microscope has a theoretical resolving power that is much greater than a light microscope and can reveal smaller structures because the electrons used have wavelengths (few hundredths of Angstroms) almost 100,000 times shorter than visible light (few hundred nanometers).An optimized electron microscope can achieve a practical resolution of a few Angstroms and a useful magnifications in the millions of times.A good light microscope can resolve structures smaller than a micron but is limited to about a few hundred nanometers resolution. The useful magnification of a light microscope is not much more than a thousand times.The electron microscope uses electrostatic and electromagnetic fields to act as lenses to control and focus the electron beam and to form an image. An optical or light microscope employs glass lenses.
How is the electron microscope different from a compound microscope?
Short Answer:It is fair to say that a light microscope and an electron microscope use the same principles, but the technical details are enormously different.The similar principles mean that both enlarge images of small object and have a lensing system to put an illuminating beam on a sample and another system to carry out the refocusing of the scattered beam into an enlarged image to be viewed.Beam: An electron microscope uses an electron beam to illuminate a specimen and produce the image.An optical or light microscope uses a light beam to illuminate a specimen and produce the image.Lenses: Lenses in an optical microscope are glass, though special types of glass improve performance, it is fundamentally the same material as common glass. Electron microscopes employ magnetic fields and electron fields to guide and focus the electron beam. Electron microscope this do not have physical lenses.Resolution: Electron microscopes have much better resolution and are capable of much higher magnification than light microscopes because the wavelength of the electrons is thousands of times smaller than the wavelength of light.Light microscopes can typically resolve structures to a fraction of a micron compared to electron microscopes which in practice achieve resolutions of a few nanometers. Practically, electron microscope can have almost a thousand times greater resolution than an optical microscope.Magnification: The useful magnification of an electron microscope is also in the range of a thousand times greater than an optical microscope.Samples: Optical microscopes can view basically anything that one can put under the objective, though special dyes are often used to enhance features of the sample. Electron microscopes typically require the sample to be in a vacuum so the electrons are not scattered by air. Samples frequently require special treatment with a metal coating such as gold because the high energy electrons are not strongly scattered by small atoms such as carbon, oxygen and nitrogen that are common to biological samples.The actual performance of any microscope depends on its design and lensing system and so significant variation exists in the above practical characteristics and performance of both types of microscopes can be enhanced in various ways.More Specifics:Electron microscopes use electrons to illuminate and form an image of a sample and light microscopes use light to illuminate and form an image of a sample.A microscope of either type is characterized by its magnification and resolving power. The magnification depends on the lensing system and can be increased to any degree, but the maximum useful magnification is limited by the resolving power.The resolving power of a microscope can not be better than the limits placed on it by the size of the wavelength of the illuminating beam. The smaller the wavelength, the smaller the structures that can be resolved in them image.Visible wavelengths of light are a few hundred nanometers. An electron microscope operates with electrons accelerated to a few hundred thousand electron volts of energy and with a wavelength in the range of few hundredths of an Angstrom.An electron microscope has a theoretical resolving power that is much greater than a light microscope and can reveal smaller structures because the electrons used have wavelengths (few hundredths of Angstroms) almost 100,000 times shorter than visible light (few hundred nanometers).An optimized electron microscope can achieve a practical resolution of a few Angstroms and a useful magnifications in the millions of times.A good light microscope can resolve structures smaller than a micron but is limited to about a few hundred nanometers resolution. The useful magnification of a light microscope is not much more than a thousand times.The electron microscope uses electrostatic and electromagnetic fields to act as lenses to control and focus the electron beam and to form an image. An optical or light microscope employs glass lenses.
Special tools used in research and technology in bio logy?
there are many special tools in research and technology! one of them are! COMPUTER LIGHT SPEED COMPUTED TOMOGRAPHY SYSTEM MRI SCANNING AND TRANSMISSION ELECTRON MICROSCOPE! CT SCAN A BUS OF MOBILE IT LASER INGESTABLE PILL CAMERA SANOSITE PORTABLE ULTRASOUND if u want to know their function u can email me @ cherise_cute49@yahoo.com THank you.. =))
