Different types of microscope and uses of it.
Answers
Answer:
Microscope types can be broken down into three main categories: optical, electron and scanning probe microscopes.
Explanation:
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Answer:
The Compound Light Microscope
The Stereo Microscope
The Digital Microscope
The USB Computer Microscope
The Electron Microscope
The Scanning Probe Microscope (SPM)
The Acoustic Microscope
Explanation:
The Compound Light Microscope
Commonly binocular (two eyepieces), the compound light microscope, combines the power of lenses and light to enlarge the subject being viewed.
Typically, the eyepiece itself allows for 10X or 15X magnification and when combined with the three or four objective lenses, which can be rotated into the field of view, produce higher magnification to a maximum of around 1000X generally.
The Stereo microscope, also called a dissecting microscope, has two optical paths at slightly different angles allowing the image to be viewed three-dimensionally under the lenses.
The Stereo Microscope
Stereo microscopes magnify at low power, typically between 10X and 200X, generally below 100x.
With this type of microscope you generally have the choice of purchasing the fixed or zoom variety from a manufacturer and are relatively inexpensive.
Uses for this type of microscope include looking at surfaces, microsurgery, and watch making, plus building and inspecting circuit boards.
Stereo microscopes allow students to observe plant photosynthesis in action.
The Digital Microscope
Step into the 21st century with a digital microscope and enter a world of amazing detail.
The digital microscope, invented in Japan in 1986, uses the power of the computer to view objects not visible to the naked eye.
Among the different types of microscopes, this kind can be found with or without eyepieces to peer into.
It connects to a computer monitor via a USB cable, much like connecting a printer or mouse. The computer software allows the monitor to display the magnified specimen. Moving images can be recorded or single images captured in the computer’s memory.
An advantage of digital microscopes is the ability to email images, as well as comfortably watch moving images for long periods.
The popularity of the digital microscope has increased at schools and among hobbyists.
The USB Computer Microscope
Although not well suited to the same scientific applications as other light microscopes, the USB Computer microscope, among the different types of microscopes, can be used on almost any object and requires no preparation of the specimen.
It is essentially a macro lens used to examine images on a computer screen plugged into its USB port.
However, the magnification is restricted and is not comparable to your standard compound light microscope at only up to 200X with a relatively small depth of field.
The Electron Microscope
Among the different types of microscopes, the Electron Microscope(EM) is a powerful microscope available and used today, allowing researchers to view a specimen at nanometer size.
The transmission electron microscope(TEM), the first type of EM, is capable of producing images 1 nanometer in size.
The TEM is a popular choice for nanotechnology as well as semiconductor analysis and production.
The Scanning Probe Microscope (SPM)
Among the different types of microscopes and microscopy techniques, scanning probe microscopy is used today in academic and industrial settings for those sectors involving physics, biology and chemistry. These instruments are used in research and development as standard analysis tools.
Images are highly magnified and are observed as three-dimensional-shaped-specimens in real time. SPMs employ a delicate probe to scan the surface of the specimen eliminating the limitations that are found in electron and light microscopy.
The Acoustic Microscope
The Acoustic Microscope is less about resolution and more about finding faults, cracks or errors from samples during the manufacturing process.
With the use of high ultrasound, this type of microscope is the easiest intra-cavity imaging tool available. It is a microscope that is under used primarily due to the fact that it is less known for its capabilities.
Scanning acoustic microscopy, or SAM, is the most current type of acoustic microscopy available to today's scientists. They can use it to view a sample internally without staining it or causing it any damage thanks to point focusing technology, which relies on a beam to scan and penetrate the specimen while it is in water.