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A thin hologram [1]: Section 4.1 is one where the thickness of the recording medium is much less than the spacing of the interference fringes which make up the holographic recording. The thickness of a thin hologram can be down to 60 nm by using a topological insulator material Sb 2 Te 3 thin film. [9]
In general usage, a hologram is a recording of any type of wavefront in the form of an interference pattern. It can be created by capturing light from a real scene, or it can be generated by a computer, in which case it is known as a computer-generated hologram, which can show virtual objects or scenes.
This explains why scratch hologram images are subject to distracting distortions and collapse of the depth image outside of a very narrow field of view --- circular arcs are a fairly poor approximation to rainbow hologram fringes. Beaty also pointed out that the rainbow hologram of a single point is a rectangular section of nested parabolics. [5]
Ordinary holograms are three-dimensional images encoded in a two-dimensional surface, such as the hologram on a typical credit card. "This time, the entire universe is encoded," he said.
Government scientists working out of trailer in Illinois are testing out the hypothesis that we're all living in a holographic world. Yes, that means that Albert Einstein may not have been totally ...
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Electron holography is holography with electron matter waves.It was invented by Dennis Gabor in 1948 when he tried to improve image resolution in electron microscope. [1] The first attempts to perform holography with electron waves were made by Haine and Mulvey in 1952; [2] they recorded holograms of zinc oxide crystals with 60 keV electrons, demonstrating reconstructions with approximately 1 ...
This hologram is a transmission hologram, where the hologram is illuminated on one side, and viewed from the other. Illumination and viewing can be done from the same side if the hologram is mounted onto a reflective surface. Mass replication of such holograms can be done using an embossing process. [3]