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2. Image intensifier - Wikipedia

   en.wikipedia.org/wiki/Image_intensifier

   An image intensifier or image intensifier tube is a vacuum tube device for increasing the intensity of available light in an optical system to allow use under low-light conditions, such as at night, to facilitate visual imaging of low-light processes, such as fluorescence of materials in X-rays or gamma rays (X-ray image intensifier), or for conversion of non-visible light sources, such as ...

3. Ubiquiti - Wikipedia

   en.wikipedia.org/wiki/Ubiquiti

   Ubiquiti Inc. (formerly Ubiquiti Networks, Inc.) [3] is an American technology company founded in San Jose, California, in 2003. [ 1 ] [ 4 ] Now based in New York City , [ 5 ] Ubiquiti manufactures and sells wireless data communication and wired products for enterprises and homes under multiple brand names.

4. Beam-index tube - Wikipedia

   en.wikipedia.org/wiki/Beam-index_tube

   The frequency of the modulating signal was a function of the tube geometry; on a 21-inch (530 mm) tube the index stripes were positioned 0.51 in (13 mm) apart, a single horizontal sweep takes about 53 microseconds, so the signal had to be modulated at 7.4 MHz. [2]

5. List of vacuum-tube computers - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum-tube_computers

   Vacuum-tube computers, now called first-generation computers, [1] are programmable digital computers using vacuum-tube logic circuitry. They were preceded by systems using electromechanical relays and followed by systems built from discrete transistors. Some later computers on the list had both vacuum tubes and transistors.

6. Night-vision device - Wikipedia

   en.wikipedia.org/wiki/Night-vision_device

   The disadvantage to a thin or removed ion barrier is the overall decrease in tube life from a theoretical 20,000 h mean time to failure for standard Gen III type, to 15,000 h MTTF for thin film types. This loss is largely negated by the low number of image-intensifier tubes that reach 15,000 h of operation before requiring replacement.

7. Vacuum-tube computer - Wikipedia

   en.wikipedia.org/wiki/Vacuum-tube_computer

   Often vacuum-tube computers made extensive use of solid-state ("crystal") diodes to perform AND and OR logic functions, and only used vacuum tubes to amplify signals between stages or to construct elements such as flip-flops, counters, and registers. The solid-state diodes reduced the size and power consumption of the overall machine.