Definition

Noun: The branch of optics concerned with the science and practice of creating holograms. It involves using coherent light (typically from a laser) to record a light field, which is then used to reconstruct a three-dimensional image of the original object.

Usage

Holography is used as a singular, uncountable noun to refer to the field of study or the technique itself. - Holography allows for the creation of images with depth and parallax. - The museum exhibit explained the principles of holography.

Examples

• Academic/Technical Context:
  • Holography is fundamentally different from photography because it records both the amplitude and the phase of light waves.
  • Advances in holography have applications in data storage and security features on credit cards.
• General Context:
  • The artist used holography to create stunning visual displays that seemed to float in mid-air.
  • We studied holography in our physics class to understand wave interference.

Advanced Usage

• Digital Holography: A modern form of the technique where the holographic interference pattern is recorded and processed using a digital sensor and computer.
  • Digital holography enables real-time 3D imaging for biological samples.
• Holography as a Modifier: While "holography" itself is a noun, it can function attributively to describe related nouns (e.g., , ). This is not a compound word but a noun used as a modifier.

Variants and Related Words

• Hologram (noun): The physical record or the resulting three-dimensional image produced by holography.
  • The security hologram on the passport is very difficult to forge.
• Holographic (adjective): Of or relating to holography or holograms.
  • The card has a holographic stripe that shimmers in the light.
• Holographer (noun): A person who creates holograms.

Synonyms

• Three-dimensional imaging: A broader term describing the creation of 3D images, which can include techniques other than holography.
• Wavefront reconstruction: A technical synonym describing the core principle of holography.

Related Phrases and Concepts

• Coherent light: Light in which the waves maintain a constant phase relationship, essential for holography. This is a key technical term within the field.
• Interference pattern: The pattern of light and dark bands recorded on the holographic plate or film, which encodes the 3D information.
• Laser holography: Specifies the use of laser light, which is the standard modern method.

Noun

1. the branch of optics that deals with the use of coherent light from a laser in order to make a hologram that can then be used to create a three-dimensional image