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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
Does TalkTalk allow port scanning?
im not sure about port scanning but we do talktalk they are terrible the charged us £200 out of no where and there excuse was they change somthing slightly even though we checked with their company a week before so now we cant use the phone.
soz i wasnt sure about the answer
How do microscopes help scientists do research?
Microscopes allow scientists to confirm what is happening on a small scale. For example, we can observe the effects of a new drug on liver cells. It merely makes it easier to empirically check theories.
On what microscope platform is a slide placed for viewing?
The microscope stage is the platform on which a slide is placed for viewing.
Proper way to carry a microscope?
you hold the neck with one hand and the base with the other hand. you should never hold the arms or else it will break.
How many lenses do simple microscopes use?
Just One A Convex one a simple microscope is a simple magnifier?
What does the coarse adjustment do on a microscope?
The coarse focus adjustment moves the lens (or the stage, depending on the construction of the microscope). So does the fine adjustment but the fine does it much less and much more accurately (less play in the gears)
List the four assessments of the quality of the image being seen using a light microscope?
[1] Brightness - How light or dark is the image? Brightness is related to the illumination system and can be changed by changing the voltage to the lamp (rheostat) and adjusting the condenser and diaphragm/pinhole apertures. Brightness is also related to the numerical aperture of the objective lens (the larger the numerical aperture, the brighter the image).
[2] Focus - Is the image blurry or well-defined? Focus is related to focal length and can be controlled with the focus knobs. The thickness of the cover glass on the specimen slide can also affect your ability to focus the image -- it can be too thick for the objective lens. The correct cover-glass thickness is written on the side of the objective lens.
[3] Resolution - How close can two points in the image be before they are no longer seen as two separate points? Resolution is related to the numerical aperture of the objective lens (the higher the numerical aperture, the better the resolution) and the wavelength of light passing through the lens (the shorter the wavelength, the better the resolution).
[4] Contrast - What is the difference in lighting between adjacent areas of the specimen? Contrast is related to the illumination system and can be adjusted by changing the intensity of the light and the diaphragm/pinhole aperture. Also, chemical stains applied to the specimen can enhance contrast.
FROM VLA hacker
Four assessments of the quality of the image being seen using a light microscope?
[1] Brightness - How light or dark is the image? Brightness is related to the illumination system and can be changed by changing the voltage to the lamp (rheostat) and adjusting the condenser and diaphragm/pinhole apertures. Brightness is also related to the numerical aperture of the objective lens (the larger the numerical aperture, the brighter the image).
[2] Focus - Is the image blurry or well-defined? Focus is related to focal length and can be controlled with the focus knobs. The thickness of the cover glass on the specimen slide can also affect your ability to focus the image -- it can be too thick for the objective lens. The correct cover-glass thickness is written on the side of the objective lens.
[3] Resolution - How close can two points in the image be before they are no longer seen as two separate points? Resolution is related to the numerical aperture of the objective lens (the higher the numerical aperture, the better the resolution) and the wavelength of light passing through the lens (the shorter the wavelength, the better the resolution).
[4] Contrast - What is the difference in lighting between adjacent areas of the specimen? Contrast is related to the illumination system and can be adjusted by changing the intensity of the light and the diaphragm/pinhole aperture. Also, chemical stains applied to the specimen can enhance contrast.
Enumerate the proper ways of handling and caring the microscope?
hold it with both hands soit does notdrop or accidentally hit something.
it is the COURSE adjustment knob
Answers to the microscope mania unit review?
Across:
1. Leeuwenhoek
8. magnification
13. eyepiece
15. ocular lens
17. low
19. diaphragm
20. coarse
22. coverslip
23. single lens
Down:
1. light source
2. Janssen
3. high
4. mirror
5. base
6. Hooke
7. objective lens
9. resolution? (my sheet had an extra box so im not sure)
10. stage clips
11. fine
12. nosepiece
14. compound
16. slide
18. arm
21. stage
What effects did the microscope have on science and society at that time and present day?
at that time, it aided in the discovery of cells as the building block higher organisms and the germ theory of disease
now many various forms of microscopy is used in chemsitry, biology, medicine and all their sub-disciplains
Who invented the digital microscope?
An early digital microscope was made by a lens company in Tokyo, Japan in 1986, which is now known as Hirox Co Ltd. It included a control box and a lens connected to a computer. Other versions of digital microscope were later developed by Keyence Corp and Leica Microsystems
What are the ways in caring microscope?
Always hold by the neck and the arm when carrying it.
Make sure you protective covering on always after you use it.
What is the name of the paper used to clean the glass surfaces of the microscope?
Lens paper is typically used to clean the glass surfaces of a microscope. It is designed to be soft and non-abrasive to avoid scratching the delicate lenses.
Why do you place one hand under the base of the microscope as you carry it?
You place one hand under the base of the microscope to distribute the weight and not cause damage to the neck of the microscope where important pieces are. It also helps so you don't drop it, two hands are better than one.
How is total magnification for an objective determined for your microscope?
The standard microscope is that the eyepiece is 10x magnification, and three types of powered magnification helps it magnify even more. Low power is 4x, Medium power is 10x, and High power is 40x. Eyepiece and Low power is 40x, Eyepiece and Medium power is 100x, and Eyepiece and High power is 400x magnification in revolance to the naked eye.
When did frits zernike ivent the phase-contrast microscope?
Frits Zernike invented the phase-contrast microscope in the 1930s, and he was awarded the Nobel Prize in Physics in 1953 for his contribution. This type of microscope allows for the visualization of transparent specimens that would normally be difficult to see using traditional bright-field microscopy techniques.
