Holography
Holography has been around for sometime now, but has become increasingly more popular in recent years. Holograms are now found in virtually all types of products. These products consist of currencies, checks, stock certificates, credit cards, passports, ID cards, computer software, audio/visual tapes and CD ROMs, aircraft, software, electrical/electronic appliances, building materials, food, pharmaceuticals, cosmetics, food, building materials, branded fashion wear, tickets for performances and major sporting events, textbooks, toys, the list goes on.
Although the possibility of holography was suggested as early as 1947, it could not be demonstrated until a pure coherent light source, the laser became available in 1963. The techniques of holograms are also applicable to sound, and bats may navigate by ultrasonic holography. Holographic techniques also have applications in storing dental records, detecting stresses and stains on construction and retail goods, detecting forged paintings and documents, and producing three-dimensional body scans.
Holography is a method of producing three-dimensional images by means of laser light. Holography uses photographic techniques involving the splitting of two beams apart.
So you may be wondering, what exactly is a hologram? The easiest way to describe it is a three dimensional picture. Like if you had a picture of a big marble, and had a smaller marble behind it you would not be able to look around the big marble to see the little one.
Holography though, has very little to do with photography. A photograph is an actual image; a snapshot taken in a seconds time to preserve a memory. “A hologram contains information about size, shape, brightness, and contrast of the object being recorded.” (www.holoworld.com/holo/quest2) “The information is stored in a very microscopic and complex pattern of interference. The interference pattern is made possible by the properties of light generated by a LASER.”
(www.holoworld.com/holo/quest2)
In order to have a hologram be effective and accurate it needs two things:
1. Light needs to be highly directional
2. One color
If it is done correctly your eyes and brain perceives the object as being in front of you. Basically it is a mind trick.
Earlier I mentioned holography. This is a method that allow...
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...le conversation though!
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...ossessed with three dimensional attributes. The optical effect may be explained by the fact that the human eyes see an object from two viewpoints separated laterally by about six centimeters. The two views show slightly different spatial relationships between near and near distant objects and the visual process fuses these stereoscopic views to a single three dimensional impression. The same parallax view of an object may be experienced upon reflection of an object seen from a concave mirror." (http://www.freepatentsonline.com/4229761.html).
In September 1959 DiVita asked 2nd Lt. Richard Sturzebecher if he knew of a way to produce a strong glass fiber that would be capable of carrying a light signal. Sturzebecher had melted 3 triaxil glass systems together for his senior exam at Alfred University. In his exam, Sturzebecher had used SiO2, a glass powder produced by Corning. Whenever he had tried to look at the substance through a microscope he would end up with headache. Sturzebecher realized that these headaches came from the high amounts of white light produced from the microscopes light that was reflected through the eyepiece via the SiO2. SiO2 would be an ideal substance for transmitting strong light signals if it could be developed into a strong fibre.
...able. After following Kane’s movement the eye naturally moves to the glowing piece of paper that appears almost legible. Panning shots such as these allow an audience the ability to follow significant attributes in scenes.
Prior to the invention of the daguerreotype, the Camera Obscura was the main optical instrument that was used to project images onto paper. The Camera Obscura was a device in the shape of a box that allowed light, which was being reflected from the images that the user was intending to capture, to enter through an opening at one end of the box to form an image on a surface and an artist would then trace the image to form the most accurate impression of an image at that peri...
Benjamin, Walter, and J. A. Underwood. The Work of Art in the Age of Mechanical Reproduction. London: Penguin, 2008. Print.
Ames Room Essay An Ames room is a distorted room that is used to create an optical illusion. It was created by an American ophthalmologist named Adelbert Ames, Jr. in 1934. The same room wasn’t constructed until the following year in 1935. It tricks people into being ordinary cubic shaped, but the true shape of this room is trapezoidal since the walls are slanted and the ceiling and the floor are inclined. As a result of the optical illusion, a figure or person standing in one corner appears to the person looking through the hole of the room( box) to be very big, while the other figure or person standing in the other corner appears to be too little.
Crimp, Douglas. "Simulacra and Simulations." Douglas Crimp,Vol. 16 Art World Follies, The MIT Press, 1981, pp.69-86
mass, the digital image will have quantum noise. When the collimation is increased, the quantum
Debord, Guy. "Society of the Spectacle." Society of the Spectacle. N.p., 1967. Web. 22 Apr. 2014.
Light rays gather through the opening of the telescope called the aperture and pass through the objective lens and refract onto a single point called the focal point. From there, the light rays continue in the same direction until it hits the eyepiece lens, which also refracts the light back into parallel rays. During the process, the image that enters our eyes is actually reverse of the original image and magnified because of the size in which we perceive the image.
Lasers (The word laser is an acronym for light amplification by stimulated emission of radiation.) lasers were first introduced in 1960, The first successfully optical laser constructed by Maiman (1960), was a ruby crystal surrounded by a helicoilal flash tube enclosed within a polished aluminum cylindrical cavity cooled by forced air. The ruby cylinder forms a Fabry-Perot cavity by optically polishing the ends to be parallel to within a third of a wavelength of light. Each end was coated with evaporated silver; one end was made less reflective to allow some radiation to escape as a beam was produced. Initially the laser was named the invention looking for a job. Photo-pumped by a fast discharge flash-lamp, the first ruby lasers operated in pulsed mode for reasons of heat dissipation and the need for high pumping powers. Nelson and Boyle (1962) constructed a continuous lasing ruby by replacing the flash lamp with an arc lamp.(1) Today lasers are much like those of the early ones and they are widely used in many fields, their uses are wide spread, From fusion physics to the DVD player these are common places where lasers are used. Medicine and surgery are no exceptions from skin resurfacing to eye surgery to correct vision. With the development of lasers Physicians have been able to provide treatment for a large number of medical disorders. Medical lasers have made it possible to treat conditions, which were previously untreatable or difficult to treat. To make the most of the laser technology physicians must maintain a up to date understanding of laser systems and conditions for which each can be applied .To achieve these goals the basic terminology and fundamentals of laser-tissue interaction is needed.
..., and filled it with figures floating upward. On the floor beneath this scene is a marble disk to mark the ideal spot from which the viewer can fully experience the illusion .
Lasers have been recently used for purposes of cosmetic surgery. They can be used to remove wrinkles, removing birthmarks or discolorations, as well as many other developing applications. Lasers have only recently been used in such ways and many new treatments are being adapted.
An explanation, The history, The applications, and the future of Virtual Reality. Internet. http://www.doane.edu/personal/student/jmchargu/final.htm. 2/25/01.
Augmented Reality has been used in a number of fields like in the military, in the fields of advertising, commercial fields, gaming fields and so on. It is still continuing to grow in an emerging pace.