In the video, a person is seen drawing a diagram on a piece of paper. The person starts by drawing two circles and then connecting them with a line. The person then writes numbers inside the circles, indicating some sort of measurement or calculation. The diagram appears to be a representation of a scientific concept, possibly related to chemistry or physics. The person's hand movements are steady and precise, suggesting that they are experienced in drawing such diagrams. The colors used in the video are muted, with the paper being a light brown and the pen being black. The video does not contain any audio or spoken words.