How can you reconstruct the image from a hologram?

Reconstruction of image The hologram acts a diffraction grating. This reconstruction beam will undergo phenomenon of diffraction during passage through the hologram. The reconstruction beam after passing through the hologram produces a real as well as virtual image of the object.

What is hologram PDF?

Holography is the science of making holograms which are usually intended for displaying three dimensional images. A holographic image can be seen looking into an illuminated holographic print by shining a laser through a hologram and projecting a image on the screen.

What is the difference between holography and photography?

Holography is used to generate 3-dimensional images. Photography is used to generate 2-dimensional images. Phenomenon used in holography is interference and diffraction of light. It uses reflection of light by the object to the photographic film.

What is the basic principle of hologram?

The holographic principle states that the entropy of ordinary mass (not just black holes) is also proportional to surface area and not volume; that volume itself is illusory and the universe is really a hologram which is isomorphic to the information “inscribed” on the surface of its boundary.

What are the benefits of holograms?

Holography uses digital imaging inputs and provides an extensive visualisation of the data for training doctors, surgeons and students. Holography converts information about the body into a digital format and has the potential to inform, promote and entertain the medical students and doctors.

Can I make a hologram of myself?

Holograms started out as science fiction and then became a very expensive reality, requiring costly projectors and virtual smoke and mirrors. As technology has improved, holograms have become cheaper to produce and more lifelike.

How do you add a hologram to PowerPoint?

In PowerPoint, you can put a text background in your slides to get that watermark effect.

To add a watermark to all the slides, Select View > Slide Master.
Select Insert > Text Box, and then click and drag to draw the text box on the slide master.
Type the watermark text (such as “DRAFT”) in the text box.

What is a hologram?

It is a physical structure that diffracts light into an image. A holographic image can be seen looking into an illuminated holographic print by shining a laser through a hologram and projecting a image on the screen.

What is principle holography?

PRINCIPLE Holography is a two-step process. The second step is the reconstruction in which the hologram is transformed into the image. First step is the recording of hologram where the object is transformed into a photographic record. 6.

How do you convert amplitude hologram to phase hologram?

In a phase hologram, the phase information is recorded as index variation. Thus the ampli- tude transmittance has magnitude equals to 1 and a varying phase ~t(x;y) = e i( x;y). One can convert an amplitude hologram into a phase hologram by bleaching.

What are the applications of holography?

After invention of holography by Dennis Gabor in 1947 it is widely used in various areas. The development of new holography methods made it suitable for new industrial and scientific applications: printing, security and authentication, sensors, data storage, particles analysis, etc.