In the first experiment the angle of diffraction was calculated using the formula tan θ = y/L to get θ = 3.27о and the wavelength (λ) was calculated using the formula d sin θ = n λ to get 5.7 X 10-7 and 5.63 X 10-7 when the distance between each slit was 1/100mm and 1/300mm respectively. The average wavelength of sodium is λNa = 5.65 X 10-7. The same formulas were used to calculate the wavelength in the second experiment to get λred = 6.12 X 10-7, λblue-green = 5.03 X 10-7 and λviolet = 4.19 X 10-7, λ when the distance between each slits was 1/300mm, and λred = 6.11 X 10-7, λblue-green = 4.69 X 10-7 and λviolet = 3.99 X 10-7 when the distance between each slit was 1/600mm, the average of the wavelength λred = 6.12 X 10-7, λblue-green = 4.86 X 10-7 and...

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# Diffraction and interference of light

- By runescape
- October 1, 2006
- 525 Words
- 16 Views

In the first experiment the angle of diffraction was calculated using the formula tan θ = y/L to get θ = 3.27о and the wavelength (λ) was calculated using the formula d sin θ = n λ to get 5.7 X 10-7 and 5.63 X 10-7 when the distance between each slit was 1/100mm and 1/300mm respectively. The average wavelength of sodium is λNa = 5.65 X 10-7. The same formulas were used to calculate the wavelength in the second experiment to get λred = 6.12 X 10-7, λblue-green = 5.03 X 10-7 and λviolet = 4.19 X 10-7, λ when the distance between each slits was 1/300mm, and λred = 6.11 X 10-7, λblue-green = 4.69 X 10-7 and λviolet = 3.99 X 10-7 when the distance between each slit was 1/600mm, the average of the wavelength λred = 6.12 X 10-7, λblue-green = 4.86 X 10-7 and...

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