Conformal mapping of a resin bubble
Several
CC BY 2.5
<p>photograph by <a href="//commons.wikimedia.org/wiki/User:Tony_Wills" title="User:Tony Wills">Tony Wills</a>, software GIMP 
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<table class="layouttemplate" style="margin: 0.5em auto; width: 100%; background-color: #f8f8f8; border: 2px solid #e0e0e0; padding: 5px;" lang="en" dir="ltr"><tbody><tr><td style="padding:5px;"><div class="wpImageAnnotatorControl wpImageAnnotatorOff"><a href="//commons.wikimedia.org/wiki/File:Applications-graphics.svg" class="image"><img alt="Applications-graphics.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Applications-graphics.svg/45px-Applications-graphics.svg.png" decoding="async" width="45" height="45" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Applications-graphics.svg/68px-Applications-graphics.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Applications-graphics.svg/90px-Applications-graphics.svg.png 2x" data-file-width="48" data-file-height="48"></a></div>
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<td style="width:100%;">This  is a <i><b><a href="https://en.wikipedia.org/wiki/Image_editing" class="extiw" title="w:Image editing">retouched picture</a></b></i>, which means that it has been digitally altered from its original version. Modifications: <i>somewhat whirled</i>. The original can be viewed here: <b><a href="//commons.wikimedia.org/wiki/File:Resin_from_Pinus_Radiata_Stump_4.jpg" title="File:Resin from Pinus Radiata Stump 4.jpg">Resin from Pinus Radiata Stump 4.jpg</a>: <a href="//commons.wikimedia.org/wiki/File:Resin_from_Pinus_Radiata_Stump_4.jpg" class="image"><img alt="Resin from Pinus Radiata Stump 4.jpg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Resin_from_Pinus_Radiata_Stump_4.jpg/22px-Resin_from_Pinus_Radiata_Stump_4.jpg" decoding="async" width="22" height="16" class="thumbborder" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Resin_from_Pinus_Radiata_Stump_4.jpg/32px-Resin_from_Pinus_Radiata_Stump_4.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Resin_from_Pinus_Radiata_Stump_4.jpg/43px-Resin_from_Pinus_Radiata_Stump_4.jpg 2x" data-file-width="1775" data-file-height="1331"></a></b>. Modifications made by <a href="//commons.wikimedia.org/wiki/User:CarolSpears" title="User:CarolSpears">CarolSpears</a>.
<p><span class="layouttemplateargs" style="display:none;speak:none;" title="template=Retouched+picture 1%3Dsomewhat+whirled 2%3DResin+from+Pinus+Radiata+Stump+4.jpg 3%3DCarolSpears 4%3D 5%3D"> </span>
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