7523323
Description
Flashcards by Farouk Elchalakani, updated more than 1 year ago
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Created by Farouk Elchalakani
almost 8 years ago
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| Question | Answer |
| explain 1 difference between light microscopes and electron microscopes | with electron microscopes they do not use light,instead they use beams of tiny particles called electrons and they are more powerful |
| what are the two types of electron microscopes? | 1.transmission electron microscope 2.scanning electron microscope |
| in your own words explain what a specimen is ? | a specimen is the object/item/creature that is being magnified under a microscope |
| which direction will the specimen move if you move it to the left under a stereo microscope? | the same way, left |
| which direction will the specimen move if moved down under a light microscope(monocular,binocular)? | it will move up ,in the opposite direction |
| what is the difference between monocular and binocular microscopes? | monocular has one eyepiece to look through, binocular has two |
| in which part of a microscope is the specimen placed? | the stage |
| what is the definition of image? | image is all that you see through a eyepiece or microscope |
| what is the field of view? | the field of view is what you see or how much you see of the whole specimen through a microscope |
| what is a micrometer? | a micrometer is a length that is a thousandth of a millimeter ,often used by scientists |
| what is the maximum magnification for a light microscope? | x 1000 meaning a thousand times bigger |
| what is the maximum magnification for a stereo microscope? | x100 ,a hundred times bigger |
| calculate the following .. if ocular lens magnification is x 5 and objective lens is x 5 what is the total magnification? | x 5 times 5 = x 25 |
| if ocular lens magnification is x2 and objective lens is x5 what is the total magnification? | x2 x 5 = x10 |
| when magnification increases what happens to the field of view? | the field of view gets smaller |
| which microscope provides a 3 dimensional view of the specimen? | the stereo microscope |
| which microscopes provide a view of the inner structure of specimen such as cells? | light microscopes and TEMs |
| what is another name given for the stereo microscope ? | the dissecting microscope |
| which part of a microscope is used to focus the image on low power? | the coarse focus knob |
| what does the fine focus knob do? | it is used to focus the image on high power |
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