how does a pen work
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Answer:
A ballpoint pen works exactly the same way. The tiny ball is held in a socket, and the back of the ball is exposed so it can pick up ink from the reservoir. The ball fits into the socket with just enough space to move freely.
Whether you prefer a fountain or ballpoint pen, the ink cartridges inside act as reservoirs, allowing you to write with ease. Both types of pen rely on gravity to deliver the ink to the paper; however, most fountain pens also rely on air flowing up into the cartridge to function.
Modern fountain pens consist of a nib (writing point), a reservoir (tank to hold the ink), a cap, a clip, and a barrel (the main body of the pen). The ink in the reservoir flows to the nib through a small tube due to the effect of gravity and capillary action.
A ballpoint pen works exactly the same way. The tiny ball is held in a socket, and the back of the ball is exposed so it can pick up ink from the reservoir. The ball fits into the socket with just enough space to move freely.