Today, when I finally got my son to the table to start his homework, he said to me, “Dad, I need help with this. I am learning about capacity”. So, I was about to help him but then it brought me back to the time I was trying to explain how the apparatus worked. The way I explained how apparatus worked was by using the concept of capacity. I defined tension as the tendency of electricity to escape from an electrified body. I also had to introduce for the first time the relationship between two quantities and the amount of charge. I figured out that capacity is inversely proportional to the distance between the two armatures. I realized that if capacity touches the lower disc of the condenser electrometer with a charged body, while the upper one is earthed, the disc is able to receive a high electrical charge, because of the considerable capacity of the apparatus, even though the tension is low. When the charged body is removed, the capacity decreases and the tension increases. On March 4, 1782, how I explained capacity was read before the Royal Society. At the end of this, I explained to the equation charge, capacity and tension- Q= C x T- Then, I came back from my flash back and I looked down to the book and the equation he was working on was Q= C x T. So, I was going to explain to him how it worked, but then I found him fast asleep on the couch.