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GAB: A Aplicação da Lei de Snell :
n1 sen ângulo 1 = n2 sen ângulo 2 n= índice de refração do meio !! A refraçao é um fenômeno optico que ocorre quando a luz passa de um meio para outro modificando seu comprimento de onda e velocidade
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Mas como é que faz para saber téta 2 (e não seno de téta 2)?
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Lei de Snell é n1 x sen(theta1) = n2 x sen (theta2)
Considerando que o feixe de luz refrata do ar (n1 = 1,00) para a água (n2 = 1,33), temos que:
1,00 x sen(theta1) = 1,33 x sen(theta2)
sen(theta2) = {[1,00 x sen(theta1)] / 1,33}
theta2= [(1,00/1,33) x sen(theta1)] / sen ou theta2= [(1,00/1,33) x sen(theta1)] x sen^(-1).
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Pessoal, a questão está correta. Pra quem é engenheiro, como eu, manipular funções trigonométricas é bem trivial. O que Ana Gabriella fez está errado. Ela dividiu por sen (????). Abaixo, o cálculo correto.
n(ar)*sen(theta1) = n(água)*sen(theta2)
1,00*sen(theta1) = 1,33*sen(theta2)
sen(theta2) = (1/1,33)*sen(theta1)
theta2 = arc sen [ (1/1,33)*sen(theta1) ]
Essa função arc sen x significa "um arco cujo seno é x"
Ela também é representada como sen^-1.
Espero ter ajudado.
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)