HIGH DEFINITION (HD)

High definition HD is a level on screen that provides more fluid video and more vibrant colours which have number of pixels on the screen 720p and 1080p

The letter P indicate the progressive scan of the image that loaded in each time to produce real image with narrative looks 

The display of the image into the screen is more modified with the good looking more attractive as the real image of the object

HD is more significant view into the cinema’s where most of the 3D and 4D looks well and reflect the actual sense  

Digital camera high definition photo is a shooting mode found on some digital cameras that produces a 1920x1080 pixel high-definition (HD) quality photo that will perfectly fit a wide-screen HDTV (16:9) for full-screen viewing.

This digital camera have capability of capturing motion picture recording (videos) using the camera, rather than still pictures.

The resolution of the image leads to significance view of the wallpaper and video shown into the screen. 

High-definition image sources include terrestrial broadcast, direct broadcast satellite, digital cable, high definition disc digital cameras, internet downloads and the latest generation of video game consoles.

HD wallpaper will be designed into the number of pixel and show the actual area with colour of the allocated place with the required features such as in the forest shows the green and natural source in sea the designed structure appeared with hills and valley.

HD wallpaper can be designed with photographers and used of the LED to be displayed into the

Digital cameras that have the high definition photo feature also will offer an optional component cable that you can use to connect the digital camera directly to the HDTV.

Most computers are capable of HD or higher resolutions over VGA, DVI, and/or HDMI. Storing and playing HD movies requires a disc that holds more information, like a Blu-ray Disc which hold 25 GB in single layer form and 50 GB for double layer

A number of online video streaming/on demand and digital download services offer HD video, among them YouTube, Vimeo, Hulu, Amazon Video On Demand, Netflix Watch Instantly, and others.

 The growth of technology could lead to show life into real sense by vivid example and provider the proof that all made in the earth was technical created by God

FIBER OPTICS

Fiber-optic lines are strands of optically pure glass as thin as a human hair that carry digital information over long distances  sends information coded in a beam of light down a glass or plastic pipe
Fiber-optic cables carry information between two places using entirely optical (light-based) technology
A technology that uses glass (or plastic) threads (fibers) to transmit data. A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.

Fiber optics has several advantages over traditional metal

Fiber optic cables have a much greater bandwidth than metal cables. This means that they can carry more data.

Fiber optic cables are less susceptible than metal cables to interference.

Fiber optic cables are much thinner and lighter than metal wires. 

Data can be transmitted digitally (the natural form for computer data) rather than analogically.

Creating the optical signal involving the use of a transmitter, relaying the signal along the fiber, ensuring that the signal does not become too distorted or weak, receiving the optical signal, and converting it into an electrical signal.

Total Internal Reflection

A ray of light, incident upon the interface between two transparent optical materials having different indices of refraction, will be totally internally reflected (rather than refracted)

 if

(1) the ray is incident upon the interface from the direction of the more dense material and

(2) the angle made by the ray with the normal to the interface is greater than some critical angle, the latter being dependent only on the indices of refraction of the media

Total internal reflection between two transparent optical media results in a loss of less than 0.001 percent per reflection;

The speed of light in matter is less than the speed of light in air, and the change in velocity that occurs when light passes from one medium to another results in refraction.

Single Fibers

Single fibers, the simplest form of fiber optics, can be used to conduct light and images to and from small regions.

Single fibers are readily available in diameters from about 0.020 to 2.0 millimeters,

Multifibers can be fused together to form image conduit, an actual image carrier. Resolution is limited by the size and packing density of the individual fibers as well as by the care exercised in packing the multifibers.

Image conduit has little or no flexibility but can be bent with heat to conform to almost any desired path. The bending radius for a half-inch-square conduit

Multi-mode Each optical fiber in a multi-mode cable is about 10 times bigger than one in a single-mode cable.

A number of fiber optic configurations for a new class of demand assignment multiple-access local area networks requiring a physical ordering among stations are proposed.

The configurations proposed for the data sub network are based on the linear, star, and tree topologies.

fiber optic connectors are plugs or so-called male connectors with a protruding ferrule that holds the fibers and aligns two fibers for mating adapter to mate the two connectors that fits the securing mechanism of the connectors

The nose piece is spring loaded and was pushed back when the connector was inserted into a mating adapter. The fiber stuck out into a drop of index matching fluid on a plastic lens

Features of good connector design

Low insertion loss, High return loss (low amounts of reflection at the interface), Ease of installation, Low cost, Reliability, Low environmental sensitivity, Ease of use

Fiber optic connectors must align microscopic glass fibers perfectly in order to allow for communication