Schematic travel paths of a reflected seismic wave with precursor phases.
<div style="display:inline-block;padding:0 3px;background-color:#BDC"><a href="//commons.wikimedia.org/wiki/File:PdP.png" title="File:PdP.png"><b>Original: </b></a></div> <div style="display:inline-block;padding:3px 0;">Julia Schäfer</div> <div style="display:inline-block;padding:0 3px;background-color:#CCF">Vector: </div> <div style="display:inline-block;"><a href="//commons.wikimedia.org/w/index.php?title=User:TilmannR&amp;action=edit&amp;redlink=1" class="new" title="User:TilmannR (page does not exist)">TilmannR</a></div>
2018-05-19 11:59
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