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Microscopes
Microscopes are used to look at things that are not visible to the naked eye. This category would demonstrate how microscopes work and information about different kinds of microscope.
4,322 Questions
What is the part of a microscope that should be used when it is carried?
there are two parts to answer your question.
firstly, the arm of the microscope, and then lift up the microscope and place your hand under the microscope and grab the base.
in short there is the arm and the base.
I think you mean TEM. It stands for Transmission. Electron. Microscope:D
Hope I helped.
P.S I am only 12.
What optical structure do all microscopes contain?
''All microscopes contain the optical structure called a lens.''
What does a compound microscope help you do?
you can discover cells, e.g. ... Robert Hooke discovered plant cells with it
What precautions must be taken when using the high power lens microscope?
Don't break the cover or the glass.
1. When moving your microscope, always carry it with both hands (Figure 1, below). Grasp the arm with one hand and place the other hand under the base for support.
2. Turn the revolving nosepiece so that the lowest power objective lens is "clicked" into position (This is also the shortest objective lens).
3. Your microscope slide should be prepared with a coverslip or cover glass over the specimen. This will help protect the objective lenses if they touch the slide. Place the microscope slide on the stage and fasten it with the stage clips. You can push down on the back end of the stage clip to open it.
4. Look at the objective lens and the stage from the side (Figure 2) and turn the coarse focus knob so that the objective lens moves downward (or the stage, if it moves, goes upward). Move it as far as it will go without touching the slide!
5. Now, look through the eyepiece and adjust the illuminator (or mirror) and diaphragm (Figure 3) for the greatest amount of light.
6. Slowly turn the coarse adjustment so that the objective lens goes up (away from the slide). Continue until the image comes into focus. Use the fine adjustment, if available, for fine focusing. If you have a microscope with a moving stage, then turn the coarse knob so the stage moves downward or away from the objective lens.
7. Move the microscope slide around so that the image is in the center of the field of view and readjust the mirror, illuminator or diaphragm for the clearest image.
8. Now, you should be able to change to the next objective lenses with only minimal use of the focusing adjustment. Use the fine adjustment, if available. If you cannot focus on your specimen, repeat steps 4 through 7 with the higher power objective lens in place. Do not allow the objective lens to touch the slide!
9. The proper way to use a monocular microscope is to look through the eyepiece with one eye and keep the other eye open (this helps avoid eye strain). If you have to close one eye when looking into the microscope, it's ok. Remember, everything is upside down and backwards. When you move the slide to the right, the image goes to the left!
10. Do not touch the glass part of the lenses with your fingers. Use only special lens paper to clean the lenses.
11. When finished, raise the tube (or lower the stage), click the low power lens into position and remove the slide.
12. Always keep your microscope covered when not in use. Dust is the number 1 enemy!
Why is it important to be able to use your microscope to perceive depth when studying slides?
Tissues usually have more than one layer of cells. Normally you can see two to three cell thicknesses which is why this is important.
WHAT The advantage of scanning?
A brief overview of the advantages of scanning
There are many advantages to scanning your information and as the speed and efficiency of scanning has improved so dramatically in recent years, the cost implication is far less of an issue.
Below are a few advantages to scanning, whatever the format is that you wish to scan (documents, drawings, microfilms etc).
Space Saving - As space in offices is becoming more and more expensive and valuable, many companies will calculate the actual cost of storage as well as the potential earning power if the space was available.
Data Backup - Disaster recovery, cost justification of losing critical information, whether the threat is fire, water, loss, or general degradation.
Degradation of Quality - Information is constantly degrading, through constant use and general ageing. Documents, drawings and micro-formats become torn, faded and possibly brittle. Scanning the information will capture the image and the scan will not degrade.
Accessibility, Time Saving - Make information available to people at their desks. Remove the need to have staff wandering around looking for documents. Scanned information can be made available over your network so that the information can be searched, viewed and printed in a fraction of the time.
The best thing is you wont have to re-file anything! Which also removes the possibility of miss-filing a piece of information.
Distribution - Information can be easily distributed, not just internally but externally via email etc, saving time, effort and postage costs.
Information Availability, Instant Access, Shifts - Information is available instantly making decision making processes faster, easier and more accurate. Also companies working in shifts, traditionally have restricted access to required information, for example "the drawing office shuts at 5:30pm", "you need to speak to Fred in the morning." Scanned information can be made available 24 hours a day for employees.
Recovering Lost Information - During the scanning process you will be amazed at the number of documents, drawings or microfilms that you thought were lost that reappear from a simple miss-filing error.
What is the difference between a magnifiying glass and a microscope?
microscopes are much more powerful
What provides the least magnification in the microscope?
The coarse adjustment provides the least magnification because it only focuses big parts whereas the fine adjustment focuses on little details.
What does a microscope measure?
A microscope is a tool that magnifies and allows us to see tiny objects, such as cells, bacteria, and other small structures, that are not visible to the naked eye. It measures the size, shape, and details of these small objects to help us study and understand them better.
The working distance of a stereo microscope refers to the distance between the objective lens and the specimen. A longer working distance allows for larger objects to be viewed, as there is more space between the lens and the specimen. Conversely, a shorter working distance limits the size of objects that can be viewed due to the physical constraints of the microscope's design.
How do you measure with a microscope?
The vernier adjustment is numbered. Go to the lowest point in the object you can focus on. Note your vernier setting. Adjust to the highest point you can focus on. Subtract the lower number from the higher and you get depth.
Why should you use lens paper only once on microscopes?
If you re-use it you will smear oils from your fingers on the lens. Additionally, dust from previously used paper can destroy the coating.
Sara's best choice for filming the movement of chromosomes during cell division would be a fluorescence microscope. This type of microscope can visualize fluorescently labeled chromosomes in real time, allowing for the observation of dynamic changes during cell division.
How do you set up a microscope?
To set up a microscope follow these steps:
- Hold the microscope by its base.
- Place it near a light source. (Not directly in the sun.)
- Adjust the mirror until light is reflected up the microscpe. (Check this by looking done the microscope.)
- Turn the objective lens to its lowest magnification.
Which type of microscope reveals the most subcellular detail?
Electron microscopes reveal the most subcellular detail compared to other types of microscopes. They use a beam of electrons to visualize specimens at a much higher magnification and resolution than light microscopes, allowing for detailed imaging of subcellular structures such as organelles and macromolecules.
A virus is 50 nanometers in size which of microscope should be used to view it?
An electron microscope would be the most suitable to view a virus that is 50 nanometers in size. The resolution of an electron microscope is much higher than a light microscope, allowing for visualization of smaller structures like viruses.
What local stores carry hand held microscopes?
You could probable find them in places like walmart and Kmart and places like that, just go to the stores and ask.
How do you handle and take care the microscope?
1.hold the microscope two hands one on the arm/ handle and the one is in the base of the microscope
2. Store the device in a clean dry box or cabinet, usually with some kind of plastic dust cover.
3. When using the High-Power objective lens, be very careful when focusing not to drive the head of the lens into the cover-slip or slide. Always visually adjust the head of the lens about 1 mm or so above the cover-slip, then looking through the eye-piece, use the "fine" focus control to bring the sample into sharp focus.
4. Always replace damaged parts and components with manufacture recommended replacements. If you must use other manufacture's parts, be sure they have the right specifications for your particular microscope.
5. When moving your microscope from place to place in the lab, use one hand to grip the microscope while supporting it at the base with your other hand. This keeps accidents and the lost of parts to a minimum.
6. Don't leave slide, sample, and cover-slip on the microscope stage for extended periods of time, and when through viewing, raise the objective lens away from the cover-slip and turn the objectives to the lowest power objective len setting. Remove the slide and put the microscope away.
7. If the microscope uses a light bulb as its light source, turn the power off when the microscope isn't actually in use.
8. Cleaning the eye-piece and objective lens, aways follow the manufacture's recommendations and instructions.
What does a microscope do to an object?
A microscope magnifies an object, allowing small details to be seen more clearly. It uses lenses to focus light on the object, enabling observers to view it at a level of detail not possible with the naked eye.
Hoe does magnetic lens in electron microscope work?
Magnetic lens utilize the Lorentz Force which they deflect the charged particles such as electrons or ions. The lens is round shaped with a core of pure iron, surrounded by copper wire (like a simple electromagnet with magnetic force inside). Usually the core of pure iron include four different layers: two outer ones are north poles and the two inner ones are south poles. When charged particles travel through the hole in the middle of the lens the magnetic force will deflect the beam, focus or widen it depending on the type of lens is convex or concave. Another thing important is that there is an electric current running through the wire to create magnetic force so magnetic lens would be heated very quickly as so they need to be cooled down with water or liquid nitrogen.
Magnetic lens have two main aberration types: chromatic aberration (due to the monochrome of the beam) and the spherical aberration (due to the equal spread of magnetic force over the surface area of the magnet's core).
Recently, they use superconductors to create magnetic lens as well to increase perfection of magnetic lens as superconductors can create strong magnetic force in a small region of the core in which improve the correction of spherical aberration. Beside, superconductors can save more power as the current keep running infinitely as there is no resistance. However, as the current is static, it's hard to maintain the strength of the magnetic force that would lead to harsh of maintenance of lens's focal length (the main factor that create the magnification and resolution of the lenses)
For more complex calculations and equations related to magnetic lens, you can search for it on other webpages.
