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Holographic Interferometry (HI) is a technique used in electrical engineering to measure the displacement of objects. It is based on the interference of two or more beams of light, which are reflected off the object being measured. The interference pattern is then recorded on a photographic plate or other recording medium. HI is used to measure the displacement of objects in a variety of applications, such as vibration analysis, stress analysis, and material characterization. It is also used to measure the displacement of objects in a non-contact manner, which is beneficial in applications where contact with the object is not possible or desirable. HI is also used to measure the displacement of objects in a non-destructive manner, which is beneficial in applications where the object must remain intact.
HI is used in a variety of industries, including automotive, aerospace, and medical. Companies that specialize in HI include Polytec, Zygo Corporation, and Optodyne. Show Less Read more
