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  2. Classical element - Wikipedia

    en.wikipedia.org/wiki/Classical_element

    Empedocles also proved (at least to his own satisfaction) that air was a separate substance by observing that a bucket inverted in water did not become filled with water, a pocket of air remaining trapped inside. [10] Fire, earth, air, and water have become the most popular set of classical elements in modern interpretations.

  3. Aerial firefighting - Wikipedia

    en.wikipedia.org/wiki/Aerial_firefighting

    Air attack is an industry term used for the actual application of aerial resources, both fixed-wing and rotorcraft, on a fire. Within the industry, though, "air attack" may also refer to the supervisor in the air (usually in a fixed-wing aircraft) who supervises the process of attacking the wildfire from the air, including fixed-wing airtankers ...

  4. Wildfire suppression equipment and personnel - Wikipedia

    en.wikipedia.org/wiki/Wildfire_suppression...

    When water is required to refill a fire engine, water delivery is vital. The typical water tender carries 1,200 US gallons (4,500 L) of water to support fire engines. In addition to supplying fire engines directly, tenders may fill water reservoirs for bucket-dropping helicopters when a lake or reservoir is not nearby.

  5. Empedocles - Wikipedia

    en.wikipedia.org/wiki/Empedocles

    Empedocles established four ultimate elements which make all the structures in the world—fire, air, water, earth. [ 6 ] [ h ] Empedocles called these four elements "roots", [ 7 ] which he also identified with the mythical names of Zeus , Hera , Nestis , and Aidoneus [ i ] (e.g., "Now hear the fourfold roots of everything: enlivening Hera ...

  6. ISS ECLSS - Wikipedia

    en.wikipedia.org/wiki/ISS_ECLSS

    The interactions between the components of the ISS Environmental Control and Life Support System (ECLSS) The International Space Station (ISS) Environmental Control and Life Support System (ECLSS) is a life support system that provides or controls atmospheric pressure, fire detection and suppression, oxygen levels, proper ventilation, waste management and water supply.

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  8. Astrology and the classical elements - Wikipedia

    en.wikipedia.org/wiki/Astrology_and_the...

    Beginning with the first sign Aries which is a Fire sign, the next in line Taurus is Earth, then to Gemini which is Air, and finally to Cancer which is Water. This cycle continues on twice more and ends with the twelfth and final astrological sign , Pisces.

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