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Learn how air traffic control uses signal lamps (or light guns) to direct aircraft with radio failure or deaf pilots. See the meanings of different colors and flashes of the signals for aircraft in flight or on the ground.
A signal lamp is a device for optical communication by flashes of light, usually using Morse code. Learn about its origins in the Royal Navy, its modern variations and its applications in naval and aviation signaling.
Marx generator diagrams; Although the left capacitor has the greatest charge rate, the generator is typically allowed to charge for a long period of time, and all capacitors eventually reach the same charge voltage. The circuit generates a high-voltage pulse by charging a number of capacitors in parallel, then suddenly connecting them in series ...
Blinkenlights are diagnostic lights on old mainframe computers or status lights on modern network hardware. The term also refers to a mock warning sign in mangled German, a common joke among hackers and computer enthusiasts.
Learn about the history, purpose, and types of emergency lights used by various vehicles, such as ambulances, police cars, and fire trucks. Emergency lights are generally red, blue, or white, and may be steady, rotating, or flashing.
Learn about the history, operation, and configurations of approach lighting systems (ALS), a lighting system installed on airport runways to help pilots land in low visibility conditions. ALS consists of lightbars, strobe lights, or a combination of the two that extend outward from the runway end and provide cues for distance and alignment.
An occulting light is a rhythmic light in which the duration of light in each period is longer than the total duration of darkness. Learn how to identify occulting lights and other types of navigational lights using symbols, abbreviations and patterns.
Learn about the different types, aspects, and layouts of railroad signals in North America. Find out how signals are used for speed, route, and safety control of trains on various railroads and lines.