Radii of the 10th bright ring:
"r^2_{10} = \\frac{2\\cdot 10 +1}{2} \\lambda R \\Rightarrow \\lambda = \\frac{2 r^2_{10}}{21R} = \\frac{d^2_{10}}{42R}" Where R = 0.7m.
"\\lambda = \\frac{5^2 \\,\\text{mm}^2}{42\\cdot 0.7 \\,\\text{m}} = 0.85\\cdot 10^{-6}\\,\\text{m} = 850 \\,\\text{nm}"
Comments
Leave a comment