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Double Slit Interference. This corresponds to an angle of θ = ° . This calculation is designed to allow you to enter data and then click on the quantity you wish to calculate in the active formula above. The data will not be forced to be consistent until you click on a quantity to calculate.
This is a simulation of diffraction of light by a double slit. Use the sliders to adjust the distance between the slits and the wavelength of the light. Use the checkboxes to show or hide the wavefronts, maxima, and vertical scale.
Explore the effects of double-slit diffraction. In this simulation written by Fu-Kwun Hwang, select N=2 using the slider and see what happens when you control the slit width, slit separation and the wavelength. Can you make an order go “missing?”
Put up a barrier to explore single-slit diffraction and double-slit interference. Experiment with diffraction through elliptical, rectangular, or irregular apertures. Make waves with a dripping faucet, audio speaker, or laser!
Double Slit Diffraction and Interference. This is a simulation of light being diffracted by a double slit, intended for anyone looking to learn about diffraction and interference. Use the sliders to change the wavelength of the light, the distance between the slits, the distance to the screen, and the height of the point where the waves come ...
In this section, we study the complications to the double-slit experiment that arise when you also need to take into account the diffraction effect of each slit. To calculate the diffraction pattern for two (or any number of) slits, we need to generalize the method we just used for a single slit.
Example 14.1: Double-Slit Experiment Suppose in the double-slit arrangement, d =0.150mm, L =120cm, λ=833nm, and y =2.00cm . (a) What is the path difference δ for the rays from the two slits arriving at point P? (b) Express this path difference in terms of λ. (c) Does point P correspond to a maximum, a minimum, or an intermediate condition?
