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Describe the combined effect of interference and diffraction with two slits, each with finite width; Determine the relative intensities of interference fringes within a diffraction pattern; Identify missing orders, if any
Figure 14.2.1 Young’s double-slit experiment. A monochromatic light source is incident on the first screen which contains a slit . The emerging light then arrives at the second screen which has two parallel slits S S0 1 and S2. which serve as the sources of coherent light. The light waves emerging from the two slits
In the single-slit image, a diffraction pattern (the faint spots on either side of the main band) forms due to the nonzero width of the slit. This diffraction pattern is also seen in the double-slit image, but with many smaller interference fringes.
Figure \(\PageIndex{6}\): The interference pattern for a double slit has an intensity that falls off with angle. The photograph shows multiple bright and dark lines, or fringes, formed by light passing through a double slit.
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.
6 Αυγ 2024 · A source of white light diffracted through a double slit will produce the following diffraction pattern. It is different to that produced by a single slit or a diffraction grating. The interference pattern produced when white light is diffracted through a double slit. Each maximum is of roughly equal width.
The results of Young's Double Slit Experiment should be very different if light is a wave or a particle. Let’s look at what the results would be in both situations, and then see how this experiment supports the wave model.
