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Vannkraft

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by

Åsfrid Skyttemyr

on 22 March 2011

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Transcript of Vannkraft

Vannkraft Historie:
-Oppgangsaga
-Kvernkallen
-gjorde det lettere
-fortere
-norge exporterte
-tjente mye Utbredelse
-ca 4000 i norge
-De tre kløfters demning kina 1994
-Over hele verden Fordeler og ulemper med miljø
-Forurenser ikke
-forurenser på en annen måte
-dyr mister boplasser, planter drukner Hvordan fungerer det?
-Demning
-Vannhjul(turbin)
-Generator
-Spole, magnet
-Elektrisk spenning
Full transcript