How does a picture appear an the screen of a TV, mobile, laptop and a cinema theatre.
Answers
The cathode-ray tube (CRT) is the main component of all kinds of display-based electronics like the television, laptop, smartphones, tablets, projector, or in a cinema theatre screen.
The latest development is the usage of Liquid crystal displays (LCDs) which are light-weight, compact, portable, cheap, reliable, and easier on the eyes than cathode ray tube screens.
LCD screens use a thin layer of liquid crystal, a liquid that exhibits crystalline properties. It is sandwiched in between two electrically conducting plates. The top plate is deposited with transparent electrodes and the back plate is illuminated so that the viewer can view the images on the screen.
Applying controlled electrical signals across these plates activates various segments of the liquid crystal. This causes changes in their properties of light diffusion or polarization. These segments can either transmit light or block light. An image is produced by passing light through selected segments of the liquid crystal to the viewer.
Answer:
Here is how a picture works
Explanation:
The essential part of every type of display-based electronic device, including a television, laptop, smartphone, tablet, projector, or movie theatre screen, is a cathode-ray tube (CRT).
The most recent innovation is the use of liquid crystal displays (LCDs), which are more eye-friendly than cathode ray tube screens and are lightweight, portable, inexpensive, reliable, and tiny.
A thin coating of liquid crystal, a liquid with crystalline characteristics, is used in LCD screens. It is positioned between two plates that conduct electricity. Transparent electrodes are placed on the top plate, and the back plate is lighted to allow the spectator to see the images on the screen.
Different liquid crystal segments are activated by passing regulated electrical signals across these plates. This results in modifications to their qualities of polarisation or light diffusion. Light can either pass through or be blocked by these portions. By shining light through specific liquid crystal segments and onto the viewer, an image is created.
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