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Celah tunggal<br />
Kisi<br />
DIFRAKSI<br />
λ . L<br />
Daya Urai (d) d = 1,22 L = jarak ke layar<br />
D<br />
D = diameter lensa<br />
n = indeks bias d = tebal lapisan<br />
δ = deviasi r = sudut bias<br />
β = sudut pembias rk = jari-jari cincin terang ke k<br />
λ = panjang gelombang cahaya R = jari-jari lensa<br />
p = jarak terang dari pusat θ = sudut difraksi/deviasi<br />
k = orde garis terang/gelap f = fokus<br />
Min sin θ = (2k) ½ λ<br />
Max d sin θ = (2k) ½ λ<br />
Min d sin θ = (2k – 1) ½ λ<br />
k = 1, 2, 3 . . . .<br />
75
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