Instanteneous <a href="https://en.wikipedia.org/wiki/AC_power" class="extiw" title="en:AC power">AC power</a> in circuit with φ=0.8
<a href="//commons.wikimedia.org/wiki/User:Mormegil" title="User:Mormegil">Petr Kadlec</a>
2007-09-23
gnuplot (own work / vlastní dílo)