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SERVEI DE MICROSCÒPIA DE LA
            UAB




                   Alejandro
                   Alzahrawi
                 Sergi Gallegos
                  Iván García
T.E.M
●   És un microscopi que utilitza un feix d'electrons per visualitzar un objecte.
    La potència amplificadora d'un microscopi òptic està limitada per la
    longitud d'ona de la llum visible. A causa que els electrons tenen una
    longitud d'ona molt menor que la de la llum visible, poden mostrar
    estructures molt més petites. Entre altres coses, s'utilitza en microbiologia
    ja que permet observar l'estructura dels virus.
Cèl·lules del teixit nerviós
S.E.M
●    És un tipus de microscopi electrònic que proporciona imatges d'una
    mostra sobre la qual s'envia un feix d'electrons. Aquests interactuen amb
    la superfície de la mostra, llavors es dispersen arreu, es localitzen
    mitjançant un detector i es projecten en una pantalla
Mosca 07
Polen 01
Bibliografía
●   http://www.nuance.northwestern.edu/epic/instruments/TEM/index.html
●   http://serc.carleton.edu/research_education/geochemsheets/techniques/SEM.htm
●   ftp://sm.uab.cat/secundaria

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Alesergivan

  • 1. SERVEI DE MICROSCÒPIA DE LA UAB Alejandro Alzahrawi Sergi Gallegos Iván García
  • 2. T.E.M ● És un microscopi que utilitza un feix d'electrons per visualitzar un objecte. La potència amplificadora d'un microscopi òptic està limitada per la longitud d'ona de la llum visible. A causa que els electrons tenen una longitud d'ona molt menor que la de la llum visible, poden mostrar estructures molt més petites. Entre altres coses, s'utilitza en microbiologia ja que permet observar l'estructura dels virus.
  • 4. S.E.M ● És un tipus de microscopi electrònic que proporciona imatges d'una mostra sobre la qual s'envia un feix d'electrons. Aquests interactuen amb la superfície de la mostra, llavors es dispersen arreu, es localitzen mitjançant un detector i es projecten en una pantalla
  • 7. Bibliografía ● http://www.nuance.northwestern.edu/epic/instruments/TEM/index.html ● http://serc.carleton.edu/research_education/geochemsheets/techniques/SEM.htm ● ftp://sm.uab.cat/secundaria