In the video, we see a clear glass filled with a yellow liquid. The glass is placed on a table, and there is a yellow pencil lying next to it. A person's hand is seen holding a metal rod, which is then inserted into the glass. The person then removes the rod, and the liquid level in the glass remains the same. The person then inserts the rod again, and the liquid level rises. The person removes the rod again, and the liquid level falls. This process is repeated several times, with the liquid level rising and falling with each insertion and removal of the rod. The video is shot in a well-lit room, and the focus is on the glass and the liquid inside it.