3-D holograms bringing astronomy to life

Scientists working on unravelling the mysteries of star cluster formation have found an innovative way of sharing their work with the general public. Taking inspiration from a 19th century magic trick, researchers from the ...

Physicists create Star Trek-style holograms

Star Trek's famous holodeck is a virtual reality stage that simulates any object in 3-D as if they were real. However, 3-D holographic projection has never been realized. A team of scientists from Bilkent University, Turkey, ...

Holographic 3-D coach to help healthy living

A 3-D hologram projection of a coach, to support physical and mental wellbeing: over the last few months, DesignLab has been working on the design and hardware for a prototype HoloProjector for virtual coaches, together with ...

Holographic color printing for optical security

Researchers from the Singapore University of Technology and Design (SUTD) have invented a new type of anti-counterfeiting technology called holographic colour prints for securing important documents such as identity cards, ...

'Jurassic Park' dinosaur expert's next big thing: holograms

Forget the gray, green and brown dinosaurs in the "Jurassic Park" movies. Paleontologist Jack Horner wants to transport people back in time to see a feathered Tyrannosaurus rex colored bright red and a blue triceratops with ...

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Holography

Holography (from the Greek ὅλος hólos, "whole" + γραφή grafē, "writing, drawing") is a technique that allows the light scattered from an object to be recorded and later reconstructed so that when an imaging system (a camera or an eye) is placed in the reconstructed beam, an image of the object will be seen even when the object is no longer present. The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object were still present, thus making the image appear three-dimensional. This effect can be seen in the figure on the right where the orientation of the mouse is significantly different in the two images and its position relative to other parts of the scene has changed. The holographic recording itself is not an image – it consists of an apparently random structure of either varying intensity, density or profile – an example can be seen in Figure 4 below.

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