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MASINA VAN DE GRAAFF

MASINA VAN DE GRAAFF. Aceasta masina are doi poli : o sfera metalica goala in interior numita colectorul de sarcini si o alta mai mica numita eclator. Colectorul se sprijina pe o coloana in care se afla o banda de

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MASINA VAN DE GRAAFF

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  1. MASINA VAN DE GRAAFF

  2. Aceasta masina are doi poli : o sfera metalica goala in interior numita colectorul de sarcini si o alta mai mica numita eclator. Colectorul se sprijina pe o coloana in care se afla o banda de cauciuc sau matase cauciucata trecuta peste doua role cilindrice si care poate fi pusa in miscare cu ajutorul unei manivele.Doua periute metali- ce ( una aflata la partea superioara, iar cealalta la partea inferioara a ma- sinii) preiau sarcinile care apar pe banda ca urmare a frecarii ei cu cele doua role si le transmit celor doua sfere.Colectorul de sarcini se va elec - triza negativ, iar eclatorul se va electriza pozitiv. Accesorii ale masinii electrostatice: - casuta cu paratrasnet - conductor sferic - conductor cilindric-conic - descarcator electric - morisca electrica - umbrela electrica

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