Apedia

A-Level Biology OCR A

Electrons Specimen Image Tem Bits Passed State Stands

TEM (Transmission Electron Microscope) passes electrons through a specimen to generate a 2D image of its internal structures, with darker areas indicating denser regions.

TEM stands for Transmission Electron Microscope. It works by transmitting a beam of electrons through a specimen, producing a 2D image of its internal features based on varying electron transmission.

Front State what TEM stands for and outline how one works & the properties of its image.
Back TEM - transmission electron microscope
  • Beam of electrons in transmitted through a specimen and focused to produce an image
  • Because some electrons are able to pass through and some aren't, we can generate an image of the internal features of the specimen
  • Image will look 2D because we are passing electrons through a specimen and it will not be in color as we are using electrons and not light
  • Darker bits will be where fewer electrons passed through, lighter bits will be where more electrons passed through

Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.

Next card: Draw labelled water molecule atoms charges

Previous card: Electrons sem surface state stands outline works properties

Up to card list: A-Level Biology OCR A