Closeup of Correction tape and Ballpoint pen #urday #macro #closeup How Correction tape and Ballpoint pen actually work?

At the very tip of a ballpoint pen is, you guessed it, a ball that rolls around and basically stains the paper with ink. Imagine if you dipped your body in paint and then rolled around white carpet, ...

Ladislao José Bíro was born 117 years ago today, and while you may not have heard of him before, you’re surely familiar with his most lasting invention: the ballpoint pen. Google’s latest Doodle ...