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natuurkunde hoofdstuk 2 nova SAMENVATTING
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natuurkunde hoofdstuk 2 nova samenvatting
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Samenvatting Nova Physics 3 havo/vwo leeropdrachtenboek
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natuurkunde H2 (nova)H2
§1 - lichtbreking
Licht verandert van richting, lichtbreking.
Als de lichtstralen van lucht naar perspex gaan, gaan de lichtstralen naar de normaal toe. Lr
is dan kleiner dan Li.
Dit geldt voor alle stoffen die dichter is dan lucht.
Deze stoffen hebben een grotere optische dichtheid.
Optische dichtheid = bv water is groter dan lucht.
Als de lichtstralen van perspex naar lucht gaan, gaan de lichtstralen van de normaal af. Lr is
dan groter dan Li.
Deze formule als je van lucht naar andere stof gaat.
𝑠𝑖𝑛 𝑖
𝑛 = 𝑠𝑖𝑛 𝑟
Deze formule als je van een stof naar lucht gaat.
𝑠𝑖𝑛 𝑖 1
𝑠𝑖𝑛 𝑟
= 𝑛
Hoe groter de brekingsindex hoe sterker het licht breekt.
Als de lichtstraal loodrecht op de normaal staat, loopt de straal rechtdoor.
ig = grenshoek
§2 - de lens
1
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