https://wiki.physik.ruhr-uni-bochum.de/fpsowas/index.php?action=history&feed=atom&title=602_Sonnengranulation
602 Sonnengranulation - Versionsgeschichte
2026-04-05T15:42:28Z
Versionsgeschichte dieser Seite in F-Praktikum SOWAS Wiki
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https://wiki.physik.ruhr-uni-bochum.de/fpsowas/index.php?title=602_Sonnengranulation&diff=1496&oldid=prev
Reicherz am 5. Dezember 2024 um 09:14 Uhr
2024-12-05T09:14:10Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">Version vom 5. Dezember 2024, 09:14 Uhr</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>'''602 Sun granulation'''</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>'''602 Sun granulation'''</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Contact: Maria Kherlakian - kherlakian@astro</del>.<del class="diffchange diffchange-inline">ruhr-uni-bochum</del>.<del class="diffchange diffchange-inline">de --- Room: GAFO 03/383 --- Phone 176 70 172078<br></del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">'''The experiment will be conducted on site at the Astronomical Institute</ins>. <ins class="diffchange diffchange-inline">The preliminary examination, report and instructions will be conducted in English</ins>. <ins class="diffchange diffchange-inline">The experiment should be booked via Kleinstein or by </ins>email <ins class="diffchange diffchange-inline">(see Kleinstein)'''</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline"><!-- Ansprechpartner: PD Dr. Dominik Bomans --- GAFO 03/973 --- </del>email<del class="diffchange diffchange-inline">: bomans@astro.rub.de --></del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">'''The experiment will </del>be <del class="diffchange diffchange-inline">conducted </del>on <del class="diffchange diffchange-inline">site at </del>the <del class="diffchange diffchange-inline">Astronomical Institute</del>. <del class="diffchange diffchange-inline">The preliminary examination</del>, <del class="diffchange diffchange-inline">report and instructions </del>will be <del class="diffchange diffchange-inline">conducted </del>in <del class="diffchange diffchange-inline">English</del>. <del class="diffchange diffchange-inline">Please book dates in Kleinstein or</del>, in <del class="diffchange diffchange-inline">urgent cases</del>, <del class="diffchange diffchange-inline">contact by email</del>.<del class="diffchange diffchange-inline">'''</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">When observing the sun, an “orange-like” surface can </ins>be <ins class="diffchange diffchange-inline">recognized. This granular surface is formed by thermal convection channels of rising hot solar matter, which falls back into the sun after cooling </ins>on the <ins class="diffchange diffchange-inline">surface</ins>. <ins class="diffchange diffchange-inline">In this experiment</ins>, <ins class="diffchange diffchange-inline">the stability of the convection channels on the sun </ins>will be <ins class="diffchange diffchange-inline">investigated. There are 16 slides of the original and digitised images of a granular field of the sun taken </ins>in <ins class="diffchange diffchange-inline">chronological order</ins>. <ins class="diffchange diffchange-inline">With the help of a holographic method</ins>, <ins class="diffchange diffchange-inline">the correlation of the images can then be determined by measuring a reconstructed reference beam. The average lifetime of the solar granules can be calculated from the decrease </ins>in <ins class="diffchange diffchange-inline">correlation. Analogous to this laser-optical experiment</ins>, <ins class="diffchange diffchange-inline">digitized copies of the slides are correlated on the computer using the Fast Fourier Transformation</ins>.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">When observing the sun, an “orange-like” surface can be recognized. This granular surface is formed by thermal convection channels of rising hot solar matter, which falls back into the sun after cooling on the surface. In this experiment, the stability of the convection channels on the sun will be investigated. There are 16 slides of the original and digitised images of a granular field of the sun taken in chronological order. With the help of a holographic method, the correlation of the images can then be determined by measuring a reconstructed reference beam. The average lifetime of the solar granules can be calculated from the decrease in correlation. Analogous to this laser-optical experiment, digitized copies of the slides are correlated on the computer using the Fast Fourier Transformation.</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">''' Please be at GAFO 03/383 at 10:00 a.m. on the day of the experiment.'''</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602.pdf Anleitung]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602.pdf Anleitung]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602_en.pdf Students manual]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602_en.pdf Students manual]</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><!-- Bearbeitet: Weimann 22.07.21 --></del></div></td><td colspan="2"> </td></tr>
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Reicherz
https://wiki.physik.ruhr-uni-bochum.de/fpsowas/index.php?title=602_Sonnengranulation&diff=1488&oldid=prev
Reicherz am 4. November 2024 um 15:21 Uhr
2024-11-04T15:21:46Z
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<td colspan="2" style="background-color: white; color:black; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: white; color:black; text-align: center;">Version vom 4. November 2024, 15:21 Uhr</td>
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<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''602 <del class="diffchange diffchange-inline">Sonnengranulation</del>'''</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''602 <ins class="diffchange diffchange-inline">Sun granulation</ins>'''</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Contact: Maria Kherlakian - kherlakian@astro.ruhr-uni-bochum.de --- Room: GAFO 03/383 --- Phone 176 70 172078<br></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Contact: Maria Kherlakian - kherlakian@astro.ruhr-uni-bochum.de --- Room: GAFO 03/383 --- Phone 176 70 172078<br></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Ansprechpartner: PD Dr. Dominik Bomans --- GAFO 03/973 --- email: bomans@astro.rub.de --></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><!-- Ansprechpartner: PD Dr. Dominik Bomans --- GAFO 03/973 --- email: bomans@astro.rub.de --></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''<del class="diffchange diffchange-inline">Der Versuch wird am Astronomischen Institut vor Ort durchgeführt</del>. <del class="diffchange diffchange-inline">Bitte buchen Sie Versuchstermine </del>in Kleinstein <del class="diffchange diffchange-inline">oder wenden Sie sich </del>in <del class="diffchange diffchange-inline">dringenden Fällen </del>an <del class="diffchange diffchange-inline">den Kontakt für Informationen zur Buchbarkeit</del>.'''</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''<ins class="diffchange diffchange-inline">The experiment will be conducted on site at the Astronomical Institute</ins>. <ins class="diffchange diffchange-inline">The preliminary examination, report and instructions will be conducted in English. Please book dates </ins>in Kleinstein <ins class="diffchange diffchange-inline">or, </ins>in <ins class="diffchange diffchange-inline">urgent cases, contact by email.'''</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">When observing the sun, </ins>an <ins class="diffchange diffchange-inline">“orange-like” surface can be recognized. This granular surface is formed by thermal convection channels of rising hot solar matter, which falls back into the sun after cooling on the surface. In this experiment, the stability of the convection channels on the sun will be investigated. There are 16 slides of the original and digitised images of a granular field of the sun taken in chronological order. With the help of a holographic method, the correlation of the images can then be determined by measuring a reconstructed reference beam. The average lifetime of the solar granules can be calculated from the decrease in correlation. Analogous to this laser-optical experiment, digitized copies of the slides are correlated on the computer using the Fast Fourier Transformation.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">''' Please be at GAFO 03/383 at 10:00 a.m. on the day of the experiment</ins>.'''</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Bei der Beobachtung der Sonne erkennt man eine "orangenartige" Oberfläche. Diese Granulenoberfläche wird durch thermische Konvektionskanäle von aufsteigender heißer Sonnenmaterie gebildet, die nach Abkühlung an der Oberfläche wieder in die Sonne zurückfällt. In diesem Versuch soll die Stabilität der Konvektionskanäle auf der Sonne untersucht werden. 16 Diapositive liegen als zeitlich nacheinander aufgenommene Aufnahmen eines Granulenfeldes der Sonne im Original und in digitalisierter Form vor. Mit Hilfe einer holographischen Methode kann dann, durch Vermessung eines rekonstruierten Referenzstrahles, die Korrelation der Bilder bestimmt werden. Aus der Abnahme der Korrelation lässt sich die mittlere Lebensdauer der Sonnengranulen berechnen. Analog zu diesem laseroptischen Experiment werden digitalisierte Kopien der Dias am Computer mithilfe der Fast Fourier Transformation korreliert.</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">'''Bitte seien Sie am Versuchstag um 10:00 Uhr in GAFO 03/380.'''</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><!-- Die ausgewerteten Daten können auf einem eigenen USB-Speicher mit nach Hause genommen werden (USB 2.0, > 500MB Kapazität). --></del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> </del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602.pdf Anleitung]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602.pdf Anleitung]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602_en.pdf Students manual]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[http://f-praktikum.ep1.rub.de/anleitung/vers602_en.pdf Students manual]</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Kontakt</del>: <del class="diffchange diffchange-inline">Sven Weimann </del>- <del class="diffchange diffchange-inline">swei</del>@astro.<del class="diffchange diffchange-inline">rub</del>.de --- <del class="diffchange diffchange-inline">Raum</del>: GAFO 03/<del class="diffchange diffchange-inline">380 </del>--- <del class="diffchange diffchange-inline">Telefon 0234 32 24566</del><br></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Contact</ins>: <ins class="diffchange diffchange-inline">Maria Kherlakian </ins>- <ins class="diffchange diffchange-inline">kherlakian</ins>@astro.<ins class="diffchange diffchange-inline">ruhr-uni-bochum</ins>.de --- <ins class="diffchange diffchange-inline">Room</ins>: GAFO 03/<ins class="diffchange diffchange-inline">383 </ins>--- <ins class="diffchange diffchange-inline">Phone 176 70 172078</ins><br></div></td></tr>
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<p><b>Neue Seite</b></p><div>'''602 Sonnengranulation'''<br />
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Kontakt: Sven Weimann - swei@astro.rub.de --- Raum: GAFO 03/380 --- Telefon 0234 32 24566<br><br />
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'''Der Versuch wird am Astronomischen Institut vor Ort durchgeführt. Bitte buchen Sie Versuchstermine in Kleinstein oder wenden Sie sich in dringenden Fällen an den Kontakt für Informationen zur Buchbarkeit.'''<br />
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Bei der Beobachtung der Sonne erkennt man eine "orangenartige" Oberfläche. Diese Granulenoberfläche wird durch thermische Konvektionskanäle von aufsteigender heißer Sonnenmaterie gebildet, die nach Abkühlung an der Oberfläche wieder in die Sonne zurückfällt. In diesem Versuch soll die Stabilität der Konvektionskanäle auf der Sonne untersucht werden. 16 Diapositive liegen als zeitlich nacheinander aufgenommene Aufnahmen eines Granulenfeldes der Sonne im Original und in digitalisierter Form vor. Mit Hilfe einer holographischen Methode kann dann, durch Vermessung eines rekonstruierten Referenzstrahles, die Korrelation der Bilder bestimmt werden. Aus der Abnahme der Korrelation lässt sich die mittlere Lebensdauer der Sonnengranulen berechnen. Analog zu diesem laseroptischen Experiment werden digitalisierte Kopien der Dias am Computer mithilfe der Fast Fourier Transformation korreliert.<br />
'''Bitte seien Sie am Versuchstag um 10:00 Uhr in GAFO 03/380.'''<br />
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[http://f-praktikum.ep1.rub.de/anleitung/vers602.pdf Anleitung]<br />
[http://f-praktikum.ep1.rub.de/anleitung/vers602_en.pdf Students manual]<br />
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<!-- Bearbeitet: Weimann 22.07.21 --></div>
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