Search results
Results from the WOW.Com Content Network
The earliest version of the CRT was known as the "Braun tube", invented by the German physicist Ferdinand Braun in 1897. [13] It was a cold-cathode diode, a modification of the Crookes tube with a phosphor-coated screen. Braun was the first to conceive the use of a CRT as a display device. [14] The Braun tube became the foundation of 20th ...
The biggest problem with many picture tubes is the loss of emission or electron production due to contaminated or damaged cathode that surrounds the heater. The 7JP4 was used in the following sets (incomplete list): Motorola VT-71 Motorola VT-73 Hallicrafters 504, 505, T-54 Sentinel TV-400 Sentinel TV-405 National TV-7W Philco 50-T701 & 50-T702
The elements of a simple broadcast television system are: . An image source. This is the electrical signal that represents a visual image, and may be derived from a professional video camera in the case of live television, a video tape recorder for playback of recorded images, or telecine with a flying spot scanner for the transfer of motion pictures to video).
Those old-school TVs were bad for the brain -- and not just due to the programming. No, the big TVs of yesteryear were also huge The disappearing toxic TV: Sales of lead-laden boob tubes plunge
Aired music videos from various artists from around the world; purchased and shut down by Hubbard Broadcasting in 2008 to expand distribution for Ovation TV. m Channel: Aired syndicated music videos, TV shows, movies and news. Was folded under decision of the owner/creator of the network. MOR Music TV: August 31, 1997: Launched on September 1 ...
Family watching TV, 1958. The concept of television is the work of many individuals in the late 19th and early 20th centuries. The first practical transmissions of moving images over a radio system used mechanical rotating perforated disks to scan a scene into a time-varying signal that could be reconstructed at a receiver back into an approximation of the original image.
The Trinitron design incorporates two unique features: the single-gun three-cathode picture tube, and the vertically aligned aperture grille. The single gun consists of a long-necked tube with a single electrode [dubious – discuss] at its base, flaring out into a horizontally-aligned rectangular shape with three rectangular cathodes inside ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!