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      <title>LES ONDES  by ETIENNE</title>
      <link>https://padlet.com/secondecondorcet/1</link>
      <description>2nde6_1</description>
      <language>en-us</language>
      <pubDate>2018-03-15 23:46:26 UTC</pubDate>
      <lastBuildDate>2018-03-16 08:26:42 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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      <item>
         <title>Leila Lili </title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242685644</link>
         <description><![CDATA[<div>&nbsp;L'échographie est une technique d'imagerie employant des ultrason. Elle est utilisée de manière courante en médecine humaine et vétérinaire, mais peut aussi être employée en recherche et dans l'industrie.&nbsp; <figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:735,&quot;url&quot;:&quot;http://www.ma-grossesse-a-lyon.com/wp-content/uploads/2014/11/Echographie-profil.jpg&quot;,&quot;width&quot;:975}" data-trix-content-type="image"><img src="http://www.ma-grossesse-a-lyon.com/wp-content/uploads/2014/11/Echographie-profil.jpg" width="975" height="735"><figcaption class="attachment__caption"></figcaption></figure> Elle permet de visualiser les organes situés au niveau de l'abdomen, du petit bassin, du cou mais aussi les vaisseaux (artères et veines), les ligaments et le cœur. Elle a pour objectif de détecter une infection, une malformation ou une tumeur.&nbsp;<br>Comment cela fonctionne ?<br>La technique de l'échographie utilise des ondes ultrasonores produites par une sonde jouant le rôle d'émetteur et de récepteur. Les fréquences utilisées dépendent des organes ou des tissus biologiques à sonder (2 MHz à 15 MHz).<br> Un émetteur ultrasonore est relié à un générateur de salves. L'émetteur est le siège d'oscillations très brèves. Le récepteur transforme l'onde ultrasonore reçue en signal électrique de même fréquence que cette onde. L'émetteur et le récepteur, placés dans un même milieu, en regard l'un de l'autre et à une distance donnée sont reliés à un oscilloscope à mémoire. Les acquisitions sont transférées vers un tableur grapheur scientifique.<br><br></div>]]></description>
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         <pubDate>2018-03-16 07:23:06 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242685644</guid>
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      <item>
         <title>Auriane Cindy</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242686237</link>
         <description><![CDATA[<div>Comment obtenir une image de fibroscope ?</div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:26:32 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242686237</guid>
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      <item>
         <title>Yanis</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242686429</link>
         <description><![CDATA[<div>&nbsp;</div><div>Déroulement:la sonde émet des ultrasons superieurs à 20 000Hz.&nbsp;</div><div>1er étape:appliquer du gel sur la zone rechercher pour éliminer l'air entre la peau et la zone d’échographie.<br>2eme étape: Les ultrasons traversent le tissue,lorsqu'il va rencontrer un obstacle comme l'appendice(a coté de l'intestin grêle) les ondes vont faire une ricochet et revenir a la sonde.<br>Dernière étape:Une fois que la sonde a récupérée les ondes envoyées.Elle transmet ces informations à un ordinateur qui va reconstituer la taille et la forme de l'organe ausculter.<br>Résultat:Une image sur un écran en gris qui va permettre au médecin de mieux comprendre se qui se passe dans le corps.<br>&nbsp;<figure class="attachment attachment--preview" 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width="276" height="183"><figcaption class="attachment__caption"></figcaption></figure><figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:195,&quot;url&quot;:&quot;null&quot;,&quot;width&quot;:259}" data-trix-content-type="image"><img src="null" width="259" height="195"><figcaption class="attachment__caption"></figcaption></figure>&nbsp;</div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:27:40 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242686429</guid>
      </item>
      <item>
         <title>Valentin Angel </title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242686571</link>
         <description><![CDATA[<div>&nbsp;Une onde est un phénomène de propagation ordonnée d'énergie, sans transport de matière.&nbsp;<br><br>La caractériser :&nbsp;<br>Chaque onde est caractérisée par différentes grandeurs :&nbsp; La longueur d’onde, la fréquence, la période, l'amplitude, la phase.</div><div><br>Comment peut-on créer une onde ?<br>EX : onde sismique / onde sonore<br>&nbsp;<br>Points communs : vibrations ressentis par tout le monde quand elles sont assez fortes, et les vibrations sont présentes dans un même milieu ( temps et espaces ).<br><br>Différences : ondes différentes ( ondes longitudinales ( Une <strong>onde longitudinale</strong> est un type d'<strong>onde</strong> pour lequel la déformation du milieu se fait dans la même direction que la propagation ) pour l'onde sonore, et ondes élastiques pour l'onde sismique ), pour l'onde sonore le son ne se propage pas dans le vide alors que pour l'onde sismique elles se propagent dans toutes les directions. <br>&nbsp; <figure class="attachment attachment--preview" 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src="data:image/png;base64,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" width="211" height="160"><figcaption class="attachment__caption"></figcaption></figure><br>Différents types d'ondes :&nbsp;<br> les ondes mécaniques, les ondes électromagnétiques , les ondes gravitationnelles , onde sismique, onde de choc...<br><br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:28:15 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242686571</guid>
      </item>
      <item>
         <title>Zakaria MZ</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242687209</link>
         <description><![CDATA[<div><strong>Qu'est - ce qu'une onde ?</strong><br><em>Une onde est une propagation&nbsp; ordonnée d'énergie , sans transport de matière.</em><br><br><strong>Comment la caractériser ?</strong><br><em>Chaque onde est caractérisée par différentes grandeurs qui leurs sont propres <br>-La longueur d'onde<br>-La fréquence<br>-La période<br>-L'amplitude<br>-La phase<br><br></em><strong>Comment peut-on créer une onde ?<br></strong><em>Avec une antenne émettrice , onde sonore </em><br><br><strong>Quels différents types d'ondes existent ?<br></strong><em>-L'onde oscillante<br>-L'onde solitaire<br>-L'onde de choc<br>-L'onde électromagnétique (Micro-onde)<br>-L'onde acoustique<br>-L'onde de probabilité<br><br></em><strong>Exemple d'onde</strong><em>&nbsp;<br>-Les vagues ou ondes de gravité sont des perturbations qui se propagent dans l'eau<br>-Le son est une onde de pression qui se transmet dans les fluides et les solides, et qui est détectée par le système auditif&nbsp;<br></em><br></div><div><em><br></em>&nbsp;<figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:644,&quot;url&quot;:&quot;https://s-media-cache-ak0.pinimg.com/originals/5a/4e/10/5a4e10b80b4356db4f2963d6385bfffc.jpg&quot;,&quot;width&quot;:990}" data-trix-content-type="image"><img src="https://s-media-cache-ak0.pinimg.com/originals/5a/4e/10/5a4e10b80b4356db4f2963d6385bfffc.jpg" width="990" height="644"><figcaption class="attachment__caption"></figcaption></figure> <figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:375,&quot;url&quot;:&quot;http://www.muaythaigalaxy.com/images/ARTICLES/2016/10-Octobre/ondechoc2.jpg&quot;,&quot;width&quot;:461}" data-trix-content-type="image"><img src="http://www.muaythaigalaxy.com/images/ARTICLES/2016/10-Octobre/ondechoc2.jpg" width="461" height="375"><figcaption class="attachment__caption"></figcaption></figure> <strong><br></strong><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:31:16 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242687209</guid>
      </item>
      <item>
         <title>Enzo Ruben</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242687448</link>
         <description><![CDATA[<div>comment obtenir une image à l'aide de rayons X ?&nbsp; <br>Les rayons X servent aux examens d’imagerie lors desquels on emploie de petites doses de radiation. Le terme « rayons X » décrit les rayons, l’examen même et les images produites des organes et des structures internes du corps<br>&nbsp; <strong>Radiographie récente d’une main.</strong><figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:435,&quot;url&quot;:&quot;http://culturesciences.chimie.ens.fr/nodeimages/images/dossiers-dossierstransversaux-Imagerie_Medicale-Radiographie_Applications_Camus.jpg&quot;,&quot;width&quot;:300}" data-trix-content-type="image"><img src="http://culturesciences.chimie.ens.fr/nodeimages/images/dossiers-dossierstransversaux-Imagerie_Medicale-Radiographie_Applications_Camus.jpg" width="300" height="435"><figcaption class="attachment__caption"></figcaption></figure>&nbsp; Le rayonnement électromagnétique est l'une des nombreuses formes sous lesquelles l'énergie se propage dans l'espace. La chaleur d'un feu, la lumière du soleil, les rayons X .</div><div>&nbsp;</div><div>Un dispositif d’imagerie médicale est constitué de deux grandes parties:<br><br></div><ul><li>Un émetteur de rayons X chargé de créer et d’envoyer les rayons X qui seront par la suite projetés sur la partie du corps qui intéresse les médecins.</li><li>Et aussi d'un capteur qui analyse les rayons X et qui les transforme en images.&nbsp;</li></ul><div><br>&nbsp; <figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:232,&quot;url&quot;:&quot;http://rayons-x-imagerie-medicale.e-monsite.com/medias/files/gg-le-combat-final.jpg&quot;,&quot;width&quot;:328}" data-trix-content-type="image"><img src="http://rayons-x-imagerie-medicale.e-monsite.com/medias/files/gg-le-combat-final.jpg" width="328" height="232"><figcaption class="attachment__caption"></figcaption></figure>&nbsp;</div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:32:13 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242687448</guid>
      </item>
      <item>
         <title>Cissé Djénéba</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242687486</link>
         <description><![CDATA[<div>Comment obtenir une image de fibroscope?<br><br>une fibroscopie peut aussi être appelle flexoscope est une variété d’endoscope (c'est un instrument optique médical permettant la visualisation d'opérations chirurgical.&nbsp;<br>pour obtenir une image de fibroscopie le médecin introduit dans l’œsophage en passant par la bouche pour enfin arrivé dans l'estomac,&nbsp; un tube muni d'une source lumineuse et d'une camera.&nbsp;<br><br>Quel type d'onde est associé à cette imagerie médical?<br><br>nous avons affaire a une onde lumineuse dans la fibroscopie.</div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:32:26 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242687486</guid>
      </item>
      <item>
         <title>aliya pamela</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242687508</link>
         <description><![CDATA[<div><strong>Comment obtenir une image à l'aide de rayons X ?</strong><br><br> Certains examens médical ce servent des rayons X comme l'échographie ou la radiographie ou l'on emploie de légères dose de radiation afin d'obtenir des images. Ces images obtenues sont quelques fois des projection d'organe mais généralement utilisé pour le système osseux. Car il s'agit du système le plus visible sur une radiographie du corps.&nbsp; Le principe est celui des ombres chinoises. Le faisceau de rayons X produit par un tube à rayons X est émis en direction de la zone du corps humain à examiner, son intensité est « modulée ». L'image est recueillie en sortie sur un détecteur (plaque photographique par exemple). <figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:863,&quot;url&quot;:&quot;https://media.kartable.fr/uploads/finalImages/final_55be62169c04e1.27340655.jpg?1489499950&quot;,&quot;width&quot;:500}" data-trix-content-type="image"><img src="https://media.kartable.fr/uploads/finalImages/final_55be62169c04e1.27340655.jpg?1489499950" width="500" height="863"><figcaption class="attachment__caption"></figcaption></figure> Radiographie d'une main<br><strong>Quel type d'onde est associé à cette imagerie médicale ?<br></strong><br>&nbsp;Les rayons X composés de photons (comme la lumière visible) sont des rayonnements électromagnétiques (comme les micro-ondes, les ondes radios, les rayons gamma et la lumière). Cependant, contrairement à la lumière, les rayons X ont la particularité d'avoir une longueur d'onde (lambda) très courte. Ils sont donc indétectables par l’œil humain.<br>Les rayonnements électromagnétiques sont des quantités d'énergie voyageant sous la forme d'une combinaison entre un champ électrique et un champ magnétique. Ces deux champs d'énergie sont perpendiculaires l'un à l'autre et possèdent chacun une intensité. Cette intensité est représentée par une courbe sinusoïdale.<figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:324,&quot;url&quot;:&quot;http://culturesciencesphysique.ens-lyon.fr/images/articles/rayonsx/Spectre_EM.png&quot;,&quot;width&quot;:594}" data-trix-content-type="image"><img src="http://culturesciencesphysique.ens-lyon.fr/images/articles/rayonsx/Spectre_EM.png" width="594" height="324"><figcaption class="attachment__caption"></figcaption></figure>&nbsp;</div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:32:32 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242687508</guid>
      </item>
      <item>
         <title>Auriane Cindy</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242688786</link>
         <description><![CDATA[<div>Comment sa se passe ?&nbsp;<br>Le gastro-entérologue introduit par la bouche un tuyau (fibroscope) pour explorer la paroi de votre œsophage, de votre estomac et du début de votre intestin grêle.&nbsp; Ce tuyau est constitué de fibres optiques souples : reliées à un système audiovisuel, elles permettent de visualiser les images sur un écran en couleur.&nbsp;</div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 07:39:08 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242688786</guid>
      </item>
      <item>
         <title>Auriane Cindy</title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242691127</link>
         <description><![CDATA[<div>Le fibroscope est inserer a l'intérieur de l'intestin qui envoie des ondes electromagnétique.</div>]]></description>
         <enclosure url="http://mon-anneau-gastrique.over-blog.com/article-rdv-n-9-la-fibroscopie-61547337.html" />
         <pubDate>2018-03-16 07:49:42 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242691127</guid>
      </item>
      <item>
         <title>Cissé Djénéba </title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242694533</link>
         <description><![CDATA[<div>&nbsp;<figure class="attachment attachment--preview" data-trix-attachment="{&quot;contentType&quot;:&quot;image&quot;,&quot;height&quot;:250,&quot;url&quot;:&quot;http://www.podips-hpa.com/wp-content/uploads/2013/10/fibro-petite.jpg&quot;,&quot;width&quot;:250}" data-trix-content-type="image"><img src="http://www.podips-hpa.com/wp-content/uploads/2013/10/fibro-petite.jpg" width="250" height="250"><figcaption class="attachment__caption"></figcaption></figure> l'image de l'estomac est projeté sur un écran près du médecin grace au onde électromagnétique  &nbsp;</div>]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 08:04:00 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242694533</guid>
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      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/secondecondorcet/1/wish/242695932</link>
         <description><![CDATA[￼]]></description>
         <enclosure url="" />
         <pubDate>2018-03-16 08:10:28 UTC</pubDate>
         <guid>https://padlet.com/secondecondorcet/1/wish/242695932</guid>
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