Jacob had a fun day on his birthday at the park riding on his favorite slide. He also discovered the new property of static electricity and began to experiment with it. You will notice the effect of the slide on Jacob in the next picture:
Getting charged up as he slid down the slide definitely had a shocking result on his hair. Luckily, he knew how to expend his excess charge, as documented in the next picture. It is difficult to see, but he is touching a small metal bolt with his right hand.
He also tested the bolts on the other side of the slide to see if he could achieve the same effect:
Lest you think that we have merely doctored the photos in order to give Jacob an undeserved reputation for scientific genius, here is a video clip of one of his many experiments that day: