loading...| Preferred Name |
transmission electron microscopy |
|
| Synonyms |
TEM technique |
|
| Definitions |
<ncicp:ComplexDefinition><ncicp:def-definition>An electron microscopy technique based on the use of transmission electron microscope.</ncicp:def-definition></ncicp:ComplexDefinition> A light source at the top of the TEM emits the electrons that travel through vacuum in the column of the microscope. Instead of glass lenses focusing the light in the light microscope, the TEM uses electromagnetic lenses to focus the electrons into a very thin beam. The electron beam then travels through the specimen you want to study. Depending on the density of the material present, some of the electrons are scattered and disappear from the beam. At the bottom of the microscope the unscattered electrons hit a fluorescent screen, which gives rise to a shadow image of the specimen with its different parts displayed in varied darkness according to their density. The image can be studied directly by the operator or photographed with a camera. [source: http://Nobelprize.org] |
|
| ID |
http://purl.bioontology.org/ontology/npo#NPO_1430 |
|
| comment |
A light source at the top of the TEM emits the electrons that travel through vacuum in the column of the microscope. Instead of glass lenses focusing the light in the light microscope, the TEM uses electromagnetic lenses to focus the electrons into a very thin beam. The electron beam then travels through the specimen you want to study. Depending on the density of the material present, some of the electrons are scattered and disappear from the beam. At the bottom of the microscope the unscattered electrons hit a fluorescent screen, which gives rise to a shadow image of the specimen with its different parts displayed in varied darkness according to their density. The image can be studied directly by the operator or photographed with a camera. [source: http://Nobelprize.org] |
|
| code |
NPO_1430 |
|
| definition |
<ncicp:ComplexDefinition><ncicp:def-definition>An electron microscopy technique based on the use of transmission electron microscope.</ncicp:def-definition></ncicp:ComplexDefinition> |
|
| label |
transmission electron microscopy |
|
| preferred_name |
transmission electron microscopy |
|
| prefixIRI |
npo:NPO_1430 |
|
| prefLabel |
transmission electron microscopy |
|
| synonym |
TEM technique |
|
| subClassOf |