<a href="https://en.wikipedia.org/wiki/" class="extiw" title="w:">Airfoil</a> in airflow. Showing <a href="https://en.wikipedia.org/wiki/angle_of_attack" class="extiw" title="w:angle of attack">angle of attack</a> α.
<a href="//commons.wikimedia.org/wiki/User:Michael32710" title="User:Michael32710">Michael32710</a>
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<span class="int-own-work" lang="en">Own work</span>