Young\'s Double Slit Experiment. Consider Figure 1. which shows the resulting di

Question

Young's Double Slit Experiment. Consider Figure 1. which shows the resulting diffraction pattern when white light is used in Young's Double Slit Experiment. Why does Young's experiment separate white light into its constituent colors? In any group of colored fringes, such as the two singled out. why is red farther out from the central fringe than green is? Why is the central fringe white? Explain these observations. note that lambda_red > lambda_green, and although you don't have any numbers in this problem, you can still use an equation.

Explanation / Answer

Youngs experiment splits white light into different colors because the path difference between different wavelength of light is different thus causing the white light to split into constituent colors. The angular distance from central fringe depends on the wavelength. As the wavelength of red light is greater than as compared to other components thus red is displaced much more as compared to other components.The central fringe is white because for central fringe all wavelengths have no path difference and phase difference.

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