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  2. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Principle. When a traditional RACON receives a radar pulse, it responds with a signal which on a radar screen takes the form of a short line of dashes and dots forming a Morse character radiating away from the location of the beacon. Typically, the Morse character starts with a dash – a long, continuous signal.

  3. DEFCON - Wikipedia

    en.wikipedia.org/wiki/DEFCON

    DEFCON. The defense readiness condition ( DEFCON) is an alert state used by the United States Armed Forces. [1] [2] For security reasons, the US military does not announce a DEFCON level to the public. [1] The DEFCON system was developed by the Joint Chiefs of Staff (JCS) and unified and specified combatant commands. [3]

  4. Terrain awareness and warning system - Wikipedia

    en.wikipedia.org/wiki/Terrain_awareness_and...

    In aviation, a terrain awareness and warning system (TAWS) is generally an on-board system aimed at preventing unintentional impacts with the ground, termed "controlled flight into terrain" accidents, or CFIT.

  5. Rayon - Wikipedia

    en.wikipedia.org/wiki/Rayon

    Rayon, also called viscose [1] and commercialised in some countries as sabra silk or cactus silk, [2] is a semi-synthetic fiber, [3] made from natural sources of regenerated cellulose, such as wood and related agricultural products. [4] It has the same molecular structure as cellulose.

  6. Ambient awareness - Wikipedia

    en.wikipedia.org/wiki/Ambient_awareness

    Ambient awareness ( AmA) is a term used by social scientists to describe a form of peripheral social awareness through social media. This awareness is propagated from relatively constant contact with one's friends and colleagues via social networking platforms on the Internet.

  7. New tools from NOAA and CDC show people their risk from heat ...

    www.aol.com/news/tools-noaa-cdc-show-people...

    Officials said these efforts are geared at raising awareness among those who are particularly vulnerable to extreme heat, including seniors, pregnant women, people with asthma, young children and ...

  8. Awareness - Wikipedia

    en.wikipedia.org/wiki/Awareness

    Awareness is a relative concept. It may be focused on an internal state, such as a visceral feeling, or on external events by way of sensory perception. [3] It is analogous to sensing something, a process distinguished from observing and perceiving (which involves a basic process of acquainting with the items we perceive). [4]

  9. Why this campus turmoil story is so complex - AOL

    www.aol.com/why-campus-turmoil-story-complex...

    The nuance and history of the Israeli-Palestinian conflict remains difficult to capture succinctly, particularly during escalating turmoil among groups with deep-held—and entrenched—views on ...

  10. Situation awareness - Wikipedia

    en.wikipedia.org/wiki/Situation_awareness

    Situational awareness or situation awareness (SA) is the understanding of an environment, its elements, and how it changes with respect to time or other factors. Situational awareness is important for effective decision making in many environments.

  11. High-frequency Active Auroral Research Program - Wikipedia

    en.wikipedia.org/wiki/High-frequency_Active...

    The High-frequency Active Auroral Research Program ( HAARP) is a University of Alaska Fairbanks program which researches the ionosphere – the highest, ionized part of Earth's atmosphere . The most prominent instrument at HAARP is the Ionospheric Research Instrument (IRI), a high-power radio frequency transmitter facility operating in the high ...