Sabtu, 01 Oktober 2011

CHARACTERISTICS OF HUMAN EYES

Similarly, the characteristics of the human eye which is the basic principle to the establishment of TV technology, among others:

The human eye can not follow the movement of the light source is moving very fast,
eg in a dark room a light source (Flashlight or small flashlight, mosquito coil ignition, flame or smoking)            when driven slowly will be seen as a point of light, but when he moved very quickly then it will be seen as light lines corresponding movement.

Human eyes can not see the flashing light source 20 times per second,
Lighting Lamp TL example blink as much as 50 x per second.

Human eyes can not see the change of moving images as much as 16 pictures per second,
examples of film technology that uses the turn of the Frame as many as 24 frames per second.

 Human eyes can not see two dots side by side to make the point 1.5 minutes,
example, if we look at the Railroad by standing between the two rails, it will show both Railroad will meet in one point.

In the human eye there are millions of nerve eye, among others are:
 Nerve Trunk (en Sta ), namely the eye nerve is sensitive to low light intensity of high information
 Neural Cone (C  ne), ie the eye nerve is sensitive to color information.
The number of neural stem hundred times the amount of nerve Cone, which is why the human eye is more sensitive to light than dark objects can be seen the color of the object. (Examples of natural color at a time of sun and natural color at sunset).

Early Black & White TV technology (Monochrome TV) consider the characteristics of the human eye as mentioned in number 1 to number 4, while the color TV technology is added to the consideration of the characteristics of the human eye number 5; it is also concerned with understanding the Picture or Picture Resolution Resolution is the ability human eye to see two dots side by side in Black and White Horizontal or Vertical.

Film Cinema is a medium of limited information (Limitted Audiencies) have been first known to the public before the era of TV technology and developments in technology with the Electronic Media Television Information communication as the development of radio broadcasting media has a target of target (audience) is more extensive (Mass Audiences) where the terms- television technology requirements that must be considered include:
1) Must be seen in space without having to turn off the lights or lighting during the day without having to
    darken the room.
2) Pictures must be smooth and sharp.
3) Figure is not blinking (flickers).
4) Must be seen by two or more viewers than a short distance.
5) Can be set by a layman.

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