hologram
Noun: A hologram is a flat, two-dimensional photographic plate or film that, when illuminated with laser light, produces a three-dimensional image of the recorded object. It is not a normal photograph but a special record of light patterns that recreates the appearance of depth and perspective.
The word hologram is used to refer to the physical photographic record itself or, more commonly, to the three-dimensional image it produces. - It is typically used as a countable noun. - It describes a product of the technology of holography.
- The security feature on the credit card is a hologram of an eagle.
- Scientists examined the hologram to study the object's dimensions from every angle.
- The museum exhibit featured a hologram of a historical figure that looked incredibly real.
- Hologram as a Concept: In science fiction and futuristic discussions, "hologram" can refer to any projected three-dimensional image, even those created by other technologies.
- In the meeting, the CEO appeared as a life-sized hologram from across the globe.
- In a Technical Context: It specifically denotes the interference pattern recorded on the photographic medium.
- Creating the hologram required a perfectly stable laser and a vibration-free environment.
- Holography (n): The science and process of making holograms.
- Holographic (adj): Having the properties of a hologram; appearing three-dimensional.
- The new passport has a holographic cover to prevent forgery.
- 3D image: A general term for any three-dimensional picture.
- Stereogram: A broader term for any two-dimensional picture that produces an illusion of depth, though not created via laser interference like a hologram.
(Note: As a technical noun, "hologram" is not commonly used in idiomatic expressions or phrasal verbs.) - Holographic principle: A concept in theoretical physics, not directly about the common use of "hologram" but sharing the etymological root. - Holographic will: A legal term for a will handwritten by the testator, unrelated to the optical technology.
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the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography
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