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Home Science & Tech

Holography

January 25, 2021
in Science & Tech
Reading Time: 3min read
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Holography
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In News

  • Scientists have developed a method using holographic imaging to detect both viruses and antibodies.

About holographic imaging

  • Hologram
    • 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.
    • It is a process that creates three-dimensional images called holograms.
  • This is done using laser beams, the properties of interference and diffraction, light intensity recording, and illumination of the recording.
  • A holographic image can be seen by looking into an illuminated holographic print or by shining a laser through a hologram and projecting the image onto a screen.
  • The Hungarian-British physicist Dennis Gabor was awarded the Nobel Prize in Physics in 1971 “for his invention and development of the holographic method”.
  • Uniqueness of holographic images:
    • The images created so change according to the relative position of the individual viewer as if the objects displayed are actually present.

Potential applications  holographic imaging

  • Military mapping.
  • Information storage.
  • Medical.
  • Fraud and security: Eg- small silver rectangle of a dove on your credit card.
  • Art.

In News

  • Scientists have developed a method using holographic imaging to detect both viruses and antibodies.

About holographic imaging

  • Hologram
    • 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.
    • It is a process that creates three-dimensional images called holograms.
  • This is done using laser beams, the properties of interference and diffraction, light intensity recording, and illumination of the recording.
  • A holographic image can be seen by looking into an illuminated holographic print or by shining a laser through a hologram and projecting the image onto a screen.
  • The Hungarian-British physicist Dennis Gabor was awarded the Nobel Prize in Physics in 1971 “for his invention and development of the holographic method”.
  • Uniqueness of holographic images:
    • The images created so change according to the relative position of the individual viewer as if the objects displayed are actually present.

Potential applications  holographic imaging

  • Military mapping.
  • Information storage.
  • Medical.
  • Fraud and security: Eg- small silver rectangle of a dove on your credit card.
  • Art.

Antibodies

  • They are also called immunoglobulin. It is a Y-shaped protective protein produced by the immune system in response to the presence of a foreign substance, called an antigen.
  • There are five immunoglobulin classes (isotypes) of antibody molecules found in serum: IgG, IgM, IgA, IgE and IgD and are distinguished by the type of heavy chain they contain.
  • When antibodies find their target, they bind to it, which then triggers a cascade of actions that vanquish the invader. Antibodies are part of the so-called “adaptive” immune system, the arm of the immune system that learns to recognize and eliminate specific pathogens.
Source: Indian Express
Tags: News PaperPrelims

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