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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
Why must you be careful when lowering the coarse adjustment knob on a microscope?
Depending on the lens choice, the lens may need to be very close to the sample to focus. This is especially true with the higher magnifications.
You don't want to smash the lens into your sample, damaging the sample and the lens.
How has the microscope affected lives of everyday people?
it helped us find out about bacterias and how we have colds
How has the microscope allowed scientists to discover new ideas about science?
microscopes have helped scientists to dicover cells and discover their functions. they have helped scientists examine the anatomy of tiny organisms and insects, and inspect organs of all species more closely.
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How can the microscope become an extension of your senses?
The microscope can become an extension of your sense of vision because, when you look through it, it lets you see very small things close up.
What are two main types of electron microscope's and how are they diff?
TEMs - Transmission Electron Microscopes
SEMs - Scanning Electron Microscopes
The main difference in the two are that TEMs give a two dimensional image by having electrons penetrate through the specimen, where as SEMs give a three dimensional image by staining the specimen with a dense material, IE : Gold, and firing electrons at it and letting them bounce off.
How have microscopes change science?
They basically allowed us to observe micro organisms and started the field microbiology.
I think you mean TEM. It stands for Transmission. Electron. Microscope:D
Hope I helped.
P.S I am only 12.
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.
What optical structure do all microscopes contain?
''All microscopes contain the optical structure called a lens.''
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!
What does a compound microscope help you do?
you can discover cells, e.g. ... Robert Hooke discovered plant cells with it
What is the difference between a magnifiying glass and a microscope?
microscopes are much more powerful
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.
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.
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.
