UNIVERSE | SCIENCE | TECHNOLOGY on Instagram: "? How a Ballpoint Pen Works - 3D Animation of the Writing Tip Video Description (in English): Have you ever wondered how a ballpoint pen actually writes? This 3D animation shows the internal mechanism of a ballpoint pen. Watch how the ink moves from the reservoir and rolls through the tiny ball at the tip to make marks on paper. Disclaimer to clear my conscience before God: This video includes clips sourced from public content available across the i