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						<h1 itemprop="headline">Studenterkollokvium - Jens Kristian Vestergaard: Guinness bobler</h1>
						
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									<h2 class="screenreader-only">Oplysninger om arrangementet</h2>

									
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														Torsdag 22. december 2016,
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														&nbsp;kl. 15:15 -  16:00
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													<p class="news-event__info__item__ical-link"><a href="/aktuelt/nyhed/artikel/studenterkollokvium-jens-kristian-vestergaard-guinness-bobler?tx_news_pi1%5Bformat%5D=ical&amp;type=9819&amp;cHash=c4b0a2df6740e9b7d2bcaab59a5befd1">Tilføj til kalender</a></p>
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													<h3 class="news-event__info__item__header text--label-header">Sted</h3>
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														<p>Fys. Aud.</p>
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														<span itemprop="name">Grete Flarup</span>
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									<h3>Guinness bobler</h3>
<h3>Jens Kristian Vestergaard </h3>
<p>Vejleder: Karsten Riisager
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<p><em>22. Dec kl 15.15<br>Fysisk Auditorium</em>
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<p>Bobler i stout og især Guinness viser et overraskende fænomen, hvor boblerne falder og stiger samtidigt. Guinness bruger en blanding af CO2 og N2 der medfører at boblerne er meget mindre, og er længere tid om at afgasse, så det er meget nemmere at se disse bevægelser. En cirkulær strøm der driver dette har vist sig, primært, at afhænge af glassets udformning. I denne konvektion opstår der også bølger ved glassets overflade, men dette bliver uddybet ved foredraget.</p>
								
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