Introduction:
In order to understand why black and white TV is not considered a colored TV, it is essential to delve into the technical aspects of how television works and how the color is produced on the screen. Television technology has evolved significantly over the years, transitioning from black and white to color displays.

Explanation:
Black and White TV:
Black and white TVs, also known as monochrome TVs, were the earliest form of televisions. These TVs were only capable of displaying images in shades of gray, varying from pure white to absolute black. They were based on a technology called cathode ray tubes (CRTs) which used an electron beam to scan a phosphor-coated screen. The intensity of the electron beam determined the brightness of the corresponding pixel on the screen, resulting in a grayscale image.

Color TV:
Color TVs, on the other hand, utilize a different technology called the RGB color model to produce a wide range of colors on the screen. The RGB color model combines three primary colors - red, green, and blue - in varying intensities to generate a broad spectrum of hues. Instead of a single electron beam, color TVs employ three separate electron guns, each corresponding to one of the primary colors. These guns shoot electrons at phosphors that emit red, green, or blue light when struck. By controlling the intensity of each electron gun, a wide array of colors can be achieved. This process is known as additive color mixing.

Key Difference:
The fundamental difference between black and white TVs and color TVs lies in the technology used to produce images on the screen. Black and white TVs operate on a grayscale system, while color TVs utilize the RGB color model to generate a vast palette of colors. Therefore, black and white TVs lack the capability to display colors, restricting them to monochrome images. In contrast, color TVs can reproduce a multitude of colors, enabling viewers to experience a more realistic and vibrant visual display.

Conclusion:
In summary, black and white TVs are not considered colored TVs because they are based on a grayscale system and lack the technology required to produce a wide range of colors. Color TVs, on the other hand, employ the RGB color model to generate vivid and diverse hues on the screen. The transition from black and white to color television marked a significant advancement in technology, enhancing the viewing experience and allowing for a more immersive visual representation.

Why black and white television is not coloured television discuss