![]() ![]() Radio waves can diffract around obstacles like buildings, mountains, or the Earth’s curvature, allowing them to reach areas that are not in the direct line of sight of the transmitter. Radio wave diffraction: Diffraction also occurs with longer-wavelength electromagnetic waves, such as radio waves.Diffraction gratings are used in various applications, such as spectrometers and wavelength division multiplexing in fiber-optic communication systems. Each line corresponds to a specific wavelength of light, and the grating effectively disperses the light into its constituent wavelengths, creating a spectrum. When light passes through the grating, it diffracts and interferes, creating a pattern of bright spots or lines on a screen. Diffraction gratings: A diffraction grating is an optical element consisting of a large number of equally spaced narrow slits or grooves.This experiment demonstrates the wave nature of light and provides evidence for the principle of superposition. The pattern consists of alternating bright and dark fringes due to the superposition of light waves diffracted from the two slits. Double-slit diffraction: In Young’s double-slit experiment, light passes through two closely spaced narrow slits and forms an interference pattern on a screen.This pattern arises due to the interference of light waves diffracted from different parts of the slit. The intensity of the fringes decreases as the distance from the central maximum increases. The pattern consists of a central bright fringe (maximum) surrounded by alternating bright and dark fringes (maxima and minima). Single-slit diffraction: When a light wave passes through a narrow single slit and strikes a screen, a diffraction pattern is formed. ![]() Some examples and applications of diffraction in electromagnetic waves include: When the size of the obstacle or aperture is comparable to or larger than the wavelength, significant diffraction occurs, leading to a noticeable spreading and bending of the waves. The extent of diffraction depends on the wavelength of the electromagnetic wave and the size of the obstacle or aperture relative to the wavelength. Diffraction is a consequence of the wave nature of electromagnetic radiation and is governed by the principle of superposition. ![]() As the waves interact with the obstacle or aperture, they bend, spread out, and interfere with each other, creating a new wave pattern that deviates from their original propagation direction. Diffraction is a phenomenon that occurs when electromagnetic waves, such as light, encounter an obstacle or pass through an aperture (opening) in their path. ![]()
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