Vladimir Zworykin was associated with the invention of

The correct answer is Television.

Vladimir Kosmich Zworykin (1888–1982) was a Russian-American inventor and engineer who is widely credited as one of the founding fathers of modern television technology. His pioneering contributions fundamentally transformed how electronic images are captured and displayed, making broadcast television a reality.

Zworykin made two landmark inventions that together formed the complete electronic television system:

1. The Iconoscope (1923) — The Electronic Camera Tube
The Iconoscope was an early electronic camera tube that could capture moving images and convert them into electrical signals. Before this, television systems relied on mechanical spinning discs (like Nipkow discs), which were slow, inefficient, and produced very low-quality images. The Iconoscope replaced mechanical image capture with a fully electronic process, using a photosensitive mosaic screen and an electron beam to scan and transmit images at much higher speeds and resolutions.

2. The Kinescope (1929) — The Picture Tube (CRT Display)
The Kinescope was a cathode ray tube (CRT) designed to display television pictures. It received the transmitted electrical signals and used a focused electron beam to reproduce the image on a phosphorescent screen. This became the fundamental display technology used in television sets for decades — essentially the ancestor of every CRT television ever manufactured.

Together, the Iconoscope (camera) and Kinescope (display) created a fully all-electronic television system, eliminating all mechanical components from the process. Zworykin worked extensively at RCA (Radio Corporation of America) under David Sarnoff, where his research was heavily funded and developed into commercial television broadcasting.

Now let us clearly understand why the other options are incorrect:

• Colour Printing — This field is associated with inventors and developments in the printing industry, such as Johannes Gutenberg (printing press) and later innovations in chromolithography and offset printing. Zworykin had no role here.
• Radio — Radio is associated with Guglielmo Marconi (wireless telegraphy) and Nikola Tesla (radio patents). Zworykin's work was in the field of electronics and imaging, not radio transmission.
• Internet — The Internet originated from ARPANET, developed in the late 1960s–1970s, and is associated with scientists like Vint Cerf and Bob Kahn. Zworykin had no connection to this.

Therefore, Vladimir Zworykin's defining legacy is his invention of the core electronic components of Television — the Iconoscope and the Kinescope — which together enabled the age of electronic broadcast television that we know today.