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  2. High Earth orbit - Wikipedia

    en.wikipedia.org/wiki/High_Earth_orbit

    In addition, satellites in HEO can provide a continuous coverage of the Earth's surface, making it very useful for communication and navigation purposes. [5] A variety of satellites, such as TESS, [6] have been placed in HEO. There are four main reasons that most satellite are placed in lower orbits. First, a HEO can take a month or more per orbit.

  3. High entropy oxide - Wikipedia

    en.wikipedia.org/wiki/High_entropy_oxide

    Oxide precursors are not required to have the same crystal structure as the desired HEO for the solid-state reaction method to be effective. For example, CuO and ZnO may be used as precursors to synthesize (MgNiCuCoZn) 0.2 O. At room temperature, CuO has the tenorite structure and ZnO has the wurtzite structure.

  4. Highly elliptical orbit - Wikipedia

    en.wikipedia.org/wiki/Highly_elliptical_orbit

    A highly elliptical orbit (HEO) is an elliptic orbit with high eccentricity, usually referring to one around Earth. Examples of inclined HEO orbits include Molniya orbits , named after the Molniya Soviet communication satellites which used them, and Tundra orbits .

  5. Medium Earth orbit - Wikipedia

    en.wikipedia.org/wiki/Medium_Earth_orbit

    Clickable image, highlighting medium altitude orbits around Earth, [a] from Low Earth to the lowest High Earth orbit (geostationary orbit and its graveyard orbit, at one ninth of the Moon's orbital distance), [b] with the Van Allen radiation belts and the Earth to scale To-scale diagram of low, medium, and high Earth orbits Space of Medium Earth orbits (MEO) as pink area, with Earth and the ...

  6. Hohmann transfer orbit - Wikipedia

    en.wikipedia.org/wiki/Hohmann_transfer_orbit

    The diagram shows a Hohmann transfer orbit to bring a spacecraft from a lower circular orbit into a higher one. It is an elliptic orbit that is tangential both to the lower circular orbit the spacecraft is to leave (cyan, labeled 1 on diagram) and the higher circular orbit that it is to reach (red, labeled 3 on diagram).

  7. Lasswell's model of communication - Wikipedia

    en.wikipedia.org/wiki/Lasswell's_model_of...

    For example, crackling sounds during a telephone call are one form of noise. [17] [25] [26] Another criticism points out that the influence of contexts is not included. A further criticism focuses on the fact that Lasswell's model does not address various influences of the context on communication. [10]

  8. Tinbergen's four questions - Wikipedia

    en.wikipedia.org/wiki/Tinbergen's_four_questions

    The brain: For example, Broca's area, a small section of the human brain, has a critical role in linguistic capability. Hormones: Chemicals used to communicate among cells of an individual organism. Testosterone, for instance, stimulates aggressive behaviour in a number of species.

  9. Coordinated management of meaning - Wikipedia

    en.wikipedia.org/wiki/Coordinated_management_of...

    In communicating with others, people assign meanings in their messages based on past conversational experiences from previous social realities. Through communication, an underlying process takes place in which individuals negotiate common or conflicting meanings of the world around them, thereby creating a new social reality.