<div style="background:#fff;border:#bbb dashed 1px;padding:5px"><a href="http://en.citatepedia.ro/comments.php?id=287640" style="color:#000;text-decoration:none">Heat can also be produced by the impact of imperfectly elastic bodies as well as by friction. This is the case, for instance, when we produce fire by striking flint against steel, or when an iron bar is worked for some time by powerful blows of the hammer.<br><br /></a>quote by <a href="http://en.citatepedia.ro/by.php?a=Hermann+von+Helmholtz">Hermann von Helmholtz</a><div class=q> <img src="https://www.citatepedia.ro/g/32share.png" style="float:left" alt="Share"> <script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=citatepedia" async="async"></script><div style="display:inline-block" class="addthis_sharing_toolbox" data-url="http://en.citatepedia.ro/comments.php?id=287640" data-title="Hermann von Helmholtz" data-description="Heat can also be produced by the impact of imperfectly elastic bodies as well as by friction. This is the case, for instance, when we produce fire by striking flint against steel, or when an iron bar is worked for some time by powerful blows of th..."></div> </div> </div>

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