This modification in the distribution of light energy due to super position of two light waves is called interference of light. Better known today is his twoslit experiment see fig. From physical science study committee, college physics, lexington, ma, heath. Youngs double slit introduction video khan academy. Jd varma, associate professor in department of physics. Department of physics, university of wisconsinmadison, madison, wisconsin 53705. In order to observe interference in light waves, the following conditions must be met. Interference of light physics 204 experiment 5 interference of light. The two sources of light should be very close to each other. Maximal constructive interference of two waves occurs when their phase difference is 0, 2. One objection was that the interference experiment was inconsistent with the law of energy conservation at points of constructive interference, the light intensity is twice the intensity calculated by adding the intensities associated with each individual slit. Introductory physics notes from university of winnipeg algebra based interference diffraction.
Interference and diffraction introduction interference in thin film by reflection newtons rings fraunhofer diffraction due to single slit, double slit and diffraction grating interference 1. Part of the problem is that lights wave nature is only. The two sources of light should emit continuous waves of same wavelength and same time period i. We can see interference in action if we shine laser light through two slits onto a screen. In physics, interference is a phenomenon in which two waves superpose to form a resultant. The waves emitted by two sources should either have zero phase difference or no phase difference. Simulating interference and diffraction in instructional laboratories. High frequency of light has important consequences.
The michelson interferometer produces interference fringes by splitting a beam of monochromatic light so that one beam strikes a fixed mirror and the other a movable mirror. Interference of light waves similar to interference of water waves. Destructive interference is a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction. Introduction in the 17th century, the properties of light were explained by sir isaac newton and christian huygens. When the monochromatic single wavelength light is passed through two slits, the bright spots maxima of the interference pattern that forms is symmetric around.
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