16611688
Beschreibung
Karteikarten von Mina Torabi, aktualisiert more than 1 year ago
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Erstellt von Mina Torabi
vor mehr als 5 Jahre
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| Frage | Antworten |
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MAKING
THINGS
BIGGER
Image:
1396 F (binary/octet-stream)
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BY: MINA TORABI |
| WHAT ARE MICROSCOPES USED FOR? | Very small things need to be magnified or made bigger so that they can become visible to us. Scientists use microscopes to do this. |
| WHEN YOU HEAR MUSIC IN STEREO WHAT DOES IT MEAN? | It means that information is coming from two different directions. |
| WHAT IS THE MAXIMUM MAGNIFICATION ACHIEVED BY LIGHT MICROSCOPES? | the maximum magnification achieved by light microscopes is about x1000. |
| WHAT DOES ELECTRON MICROSCOPES USE TO MAKE IT MORE POWERFUL THAN LIGHT MICROSCOPES? | electron microscopes use beams of tiny particles called electrons instead of light, and are able to magnify up to a million times. |
| WHAT ARE THE TWO TYPES OF ELECTRON MICROSCOPES, AND WHAT DO THEY STAND FOR? | _transmission electron microscopes (TEM) _ scanning electron microscopes (SEM) |
| WHAT IS THE FIELD OF VIEW? | field of view is how much you can see of the specimen when you look down a microscope. |
| CONTRAST TWO THINGS ABOUT TEM AND SEM. | tem: specimen is very thin slice, electrons pass through specimen. sem: specimen can be anything; no need to slice, electrons reflect off surface of specimen. |
| CONTRAST TWO THINGS ABOUT BINOCULAR MICROSCOPE AND STEREO MICROSCOPE. | binocular: provides a two-dimensional image of the specimen,maximum magnification x1000 stereo: |
| HOW MUCH IS A MICROMETRE? | a micrometre is one-thousandth of a millimetre, or one-millionth of a metre. |
| ON A MICROSCOPE WHAT DOES THE MIRROR DO? | the mirror directs light up through the stage and specimen. |
| ON A MICROSCOPE WHAT DOES THE FINE FOCUS KNOB DO? | fine focus knob is used to focus the image on high power. |
| ON A MICROSCOPE WHAT DOES THE STAGE DO? | the stage is where the specimen is placed. |
| ON A MICROSCOPE WHAT DO YOU THINK IS THE 2 MOST IMPORTANT PARTS? | -the eyepiece or ocular lens (magnifies the image) -stage (where the specimen is placed) |
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