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Serializer

App\Entity\MediaTranslation {#1373
  -id: 2559
  -title: "Atmosphere"
  -description: """
    <p>An atmosphere is a layer of gas that surrounds a planet.</p>\r\n
    \r\n
    <p>The Earth&#39;s atmosphere is divided by scientists into&nbsp; 5 &nbsp;theoretical layers:</p>\r\n
    \r\n
    <ul>\r\n
    \t<li>The <strong>Troposphere</strong> contains 80% of the 5 trillion tons of air!&nbsp;In direct contact with and heated by the ground, this layer of air is where the important thermal exchanges responsible for meteorological&nbsp; phenomena take place.</li>\r\n
    \t<li>In the<strong> Stratosphere</strong>, the temperature gets higher as altitude increases. This temperature inversion acts as a limit for clouds. It is here that we fiind the Ozone Layer that filters out a large part of the ultraviolet radiation coming from the Sun.</li>\r\n
    \t<li>In the <strong>Mesosphere</strong>, the temperature once again begins to drop.</li>\r\n
    \t<li>Those rare particles still present in the<strong> Thermosphere </strong>interact with solar radiation.&nbsp;In absorbing this energy, they increase in temperature and ionize. This is the ionosphere. This part of the Thermosphere has important electromagnetic properties.&nbsp; The International Space Station (ISS) is in orbit in the thermosphere, beyond the ionosphere.</li>\r\n
    \t<li>Particles are so rare in the <strong>Exosphere</strong> that the probability of collisions among them is negligible. Some even escape the gravitational attraction of the Earth. Although the boundary is not clearly defined, the exosphere marks the beginning of outer space.&nbsp;The majority of satellites are&nbsp;orbiting in the exosphere, at altitudes between 800 km and 36,000 km.</li>\r\n
    </ul>
    """
  -legends: """
    Low Earth Orbit\nsatellite\r\n
    International\nSpace Station\r\n
    Auroras\r\n
    Supersonic jet\r\n
    Commercial\nairlines\r\n
    Cloud\r\n
    Everest\r\n
    Graphs\r\n
    Pressure\r\n
    Temperature\r\n
    Troposphere\r\n
    Stratosphere\r\n
    Mesosphere\r\n
    Thermosphere\r\n
    Exosphere\r\n
    Ozone layer\r\n
    1000°C to 2000°C\r\n
    mbar\r\n
    km\r\n
    10⁻⁸
    """
  -goals: """
    <ul>\r\n
    \t<li>To illustrate the scale of sizes (knowing that, in this animation, correct proportions are not always respected)</li>\r\n
    \t<li>To define the Standard Atmosphere (ISA)</li>\r\n
    \t<li>To become aware that the portion of the atmosphere that concerns us is only a very thin layer at the scale of the planet.</li>\r\n
    \t<li>To introduce the composition and the function of each layer.</li>\r\n
    </ul>
    """
  -more: """
    <p>An<strong> atmosphere</strong> is a layer of gas that surrounds a planet. Some planets do not have atmospheres.&nbsp; It is the correct combination of mass and distance from the Sun which enables gas to remain around around a planet, under the influence of gravity, without which it would volatilize off into space. We can consider the limit of the atmosphere to be precisely that distance at which a molecule of gas escapes the planet&#39;s attraction, and this limit marks the beginning of <strong>outer space</strong>.</p>\r\n
    \r\n
    <p>But this boundary is purely theoretical.</p>\r\n
    \r\n
    <ul>\r\n
    \t<li>For the International Aeronautical Federation it is the <strong>Karman Line</strong>, at an altitude of 100 km, which marks the boundary between Earth and space.</li>\r\n
    \t<li>For a space flight, it is instead at around 120 km&nbsp; that the effects of friction due to reentry into the atmosphere are first sensed.</li>\r\n
    \t<li>The physicist, for his part, seperates the atmosphere into 5 layers defined by the brutal changes in the curve of temperature as a function of altitude.</li>\r\n
    </ul>\r\n
    \r\n
    <p>The development of <strong>Life on Earth</strong> is intimately tied to the properties of the planet&#39;s atmosphere:</p>\r\n
    \r\n
    <ul>\r\n
    \t<li>It serves as a thermal buffer by limiting the extremes of temperature between day and night.</li>\r\n
    \t<li>Its gaseous composition is favorable to life. This was not always so. The current mixture,&nbsp; generally called &quot;air&quot;, is composed of 78% <strong>Nitrogen </strong>and 20% <strong>Oxygen</strong>.</li>\r\n
    \t<li>One also finds very small quantities of <strong>carbon dioxide</strong> (CO<sub>2</sub>), <strong>water vapor</strong> and<strong> methane</strong>. These gases interact strongly with certain electromagnetic waves, which is at the origin of the <strong>Greenhouse Effect</strong>, without which the average temperature at ground level would be -18&deg;C instead of the actual 15&deg;C.</li>\r\n
    \t<li>An Ozone Layer, located in the <strong>Stratosphere</strong>, protects living things from radiation of&nbsp; excessively high energy by filtering out a good part of the <strong>ultraviolet rays</strong> coming from the Sun.</li>\r\n
    </ul>
    """
  -scenario: null
  -features: "<p><strong>Click </strong>and <strong>drag </strong>the picture vertically.\n<strong>Click </strong>on the `<em>zoom`</em> buttons to zoom in or out.\n<strong>Click</strong> on `graphs` to see temperature and pressure curves.</p>"
  -publishedAt: DateTimeImmutable @1431302400 {#1371
    date: 2015-05-11 00:00:00.0 UTC (+00:00)
  }
  -preventIndexForSearch: false
  #locale: "en"
  #translatable: App\Entity\Media {#1308 …}
  #status: "published"
  #createdAt: DateTime @1228950000 {#1368
    date: 2008-12-10 23:00:00.0 UTC (+00:00)
  }
  #updatedAt: DateTime @1704677794 {#1370
    date: 2024-01-08 01:36:34.0 UTC (+00:00)
  }
}

[
  0 => "internal_api_media"
  "internal_api_media_options" => [
    "withBaseNodeName" => true
  ]
]