The luminance difference of a given target under given viewing conditions that the average human observer can just perceive. A display composed of liquid crystal suspended between two transparent sheets. The display is composed of pixels or other shapes which can be turned on or off with electrical stimulation. Typically, a light is passed through the LCD to illuminate the pixels. The compound found in liquid crystal displays.
Liquid crystal reacts predictably when electrically stimulated.
A unit of length equal to 10 -9 meter. In light measurement, the wavelength of light is measured in nanometers. Therefore, when no voltage is applied, the screen is black. Therefore, when no voltage is applied, the screen is white. The time it takes for the visible glow of a CRT's phosphor to darken after the scanning electron beam is removed.