Holography - Wikipedia
网页A hologram is a recording of an interference pattern that can reproduce a 3D light field using diffraction. In general usage, a hologram is a recording of any type of wavefront in the form of an interference pattern.
How Holograms Work - HowStuffWorks
网页2023年8月30日 · Holograms, or holographs, are images that have parallax and depth. These images are most commonly used to prevent forgeries, and can be found on licenses, credit cards and IDs.
What is a Hologram? | Hologram Definition | Live Science
网页2013年5月23日 · Holography is a photographic technique that records the light scattered from an object, and then presents it in a way that appears three-dimensional. Holograms pop up in movies such as "Star...
Are Holograms Real and How Science Makes Them Possible
网页2024年3月13日 · Holograms are three-dimensional images created by recording and reconstructing the light reflected from an object. This technology uses laser light to capture the light field an object emits, which it presents in a way that mimics the original object’s appearance.
How holograms work - Explain that Stuff
网页2022年3月26日 · Holograms are those shiny, metallic patterns with ghostly images floating inside them that help to defeat counterfeiters: they're very hard to reproduce so they help to stop people printing illicit copies of banknotes.
what is holography - holocenter
网页What is a Hologram? How are images recorded in a hologram? History of Holograms. Different Types of Holograms. What is Holographic Art. Polarization.
What is a Hologram? - holocenter
网页A hologram is a physical structure that diffracts light into an image. The term ‘hologram’ can refer to both the encoded material and the resulting image.
Holography | Optics, 3D Imaging & Laser Technology | Britannica
网页2024年8月31日 · Holography, means of creating a unique photographic image without the use of a lens. The photographic recording of the image is called a hologram, which appears to be an unrecognizable pattern of stripes and whorls but which—when illuminated by coherent light, as by a laser beam—organizes the light.
Introduction to Holography - ThoughtCo
网页2019年3月2日 · Holograms are formed by interference of light beams from a laser. How Lasers Make Holograms. Holograms are made using lasers because laser light is "coherent." What this means is that all of the photons of laser light have exactly the same frequency and phase difference.
Holographic Havoc: 3D Imagery is Shaping Our World
网页2023年10月16日 · Holographs are created by recording the light scattered from an object and then presenting it in a way that appears three-dimensional to the viewer. The term 'holography' is derived from the Greek words 'holos,' meaning 'whole,' and 'graphē,' meaning 'writing or drawing'.
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