Search results
Results from the WOW.Com Content Network
Color CRT displays in TV sets and computer monitors often have a built-in degaussing (demagnetizing) coil mounted around the perimeter of the CRT face. Upon power-up of the CRT display, the degaussing circuit produces a brief, alternating current through the coil which fades to zero over a few seconds, producing a decaying alternating magnetic ...
An RCA Victor Color TV ad featuring milliner Lilly Daché in 1959. Color television (American English) or colour television (British English) is a television transmission technology that includes color information for the picture, so the video image can be displayed in color on the television set.
A magnetostrictive torsion wire delay line Schematic of circuit connections to the acoustic delay line used in NBS mercury memory (top); block diagram of the mercury memory system (bottom) FUJIC's ultrasonic mercury delay line memory (capacity: 255 words = 8,415 bits) Ultrasonic delay line from a PAL color TV (delay time 64 μs), showing path ...
USS Jimmy Carter in the magnetic silencing facility at Naval Base Kitsap for her first deperming treatment RMS Queen Mary arriving in New York Harbor, 20 June 1945, with thousands of U.S. soldiers – note the prominent degaussing coil running around the hull Control panel of the MES-device ("Magnetischer Eigenschutz" German: magnetic self-protection) in a German submarine Close-wrap deperming ...
Color information was then separately encoded and folded into the signal as a high-frequency modification to produce a composite video signal – on a black and white television this extra information would be seen as a slight randomization of the image intensity and just appear blurry, but the limited resolution of existing sets made this ...
Later, simultaneous color systems superseded the CBS-Goldmark system, but mechanical color methods continued to find uses. Early color sets were very expensive: over $1,000 in the money of the time. Inexpensive adapters allowed owners of black-and-white NTSC television sets to receive color telecasts.
Thus, the new color television standard reduced the line rate by a factor of 1.001 to 1/286 of the 4.5 MHz audio subcarrier frequency, or about 15734.2657 Hz. This reduced the frame rate to 30/1.001 ≈ 29.9700 Hz, and placed the color subcarrier at 227.5/286 = 455/572 = 35/44 of the 4.5 MHz audio subcarrier. [2]
Introduction of color television in countries by decade. This is a list of when the first color television broadcasts were transmitted to the general public. Non-public field tests, closed-circuit demonstrations and broadcasts available from other countries are not included, while including dates when the last black-and-white stations in the country switched to color or shutdown all black-and ...