![]() ![]() ![]() In this case, we are talking about light which travels at the speed of 299 792 458 m/s. You all know whenever you are trying to click a photo with your smartphones, if you are in motion during photoshoot then the image will be blurred because the camera is not able to click steady photo when you are moving. Well, holograms are basically steady photographs of light, but light travels at very high speed and therefore it’s nearly impossible to click a steady photograph of light in a hologram. ![]() So now you may be wondering, how diffraction is related to the projection of holograms ? So let’s understand the relation between diffraction and holograms. Hologram projection is also an example of diffraction and you may have seen one. So, what comes inside your mind when you hear the word ” hologram”, it’s sound cool to me and this phenomena is pretty cool. P.s:- Microscopic pits means where data on a compact disc is stored in binary format (1 or 0) inside a CD. This forms a diffraction grating on the CD mirror surface. These pits are placed in a row of the same width and at equal distance. Recorded data on CD is stored in microscopic pits of different lengths which carries information in the CD. Compact Disc (CD) also resembles the same kind of colours when viewed from different angles. Well, rainbow is formed because water droplets in the atmosphere separate white light into different colours of the rainbow. So almost all of you have seen a rainbow formation on rainy days. Many a time you may have seen diffraction in your life but the problem is we may not notice these little things which are created due to some of the most interesting phenomena of science and diffraction is one of them. Examples and applications of diffraction: Now you know about diffraction and let’s know some of the real-life examples and application of diffraction. All kind of waves such as water waves, gravitational waves and electromagnetic waves all waves in spectrum such as radio waves, x-ray, gamma rays etc. This effect also occurs when light waves travel through a medium of different refractive index. Diffraction is tend to be used when there are many sources of wave and interference is used when only a few wave sources are considered. Now you may have heard about interference and it’s kinda same like diffraction but wait don’t get confused between both of them.ĭiffraction and interference are closely related but they both don’t have an exact meaning. According to this principle, every point on a wave behaves like a source. ![]() We can continue this reasoning along the entire height of the slit to conclude that the condition for destructive interference for the entire slit is the same as the condition for destructive interference between two narrow slits a distance apart that is half the width of the slit.Phenomena of diffraction is described from the Huygens-Fresnel principle. Similarly, the source just below the top of the slit will interfere destructively with the source located just below the middle of the slit at the same angle. Infinitely many points (three shown) along length d. ![]()
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