In the video, a person is holding a yellow sticky note with handwritten notes on it. The person is using a pen to write on the sticky note. The sticky note has two sets of numbers written on it, and the person is writing a formula to calculate the voltage. The person is writing the formula "V = I x R" and then writes the numbers "42V" and "33V" underneath it. The person then writes "R = V/I" and "0.002" underneath the formula. The video focuses on the sticky note and the person's hand as they write.