Do you know why Pen Caps have holes? Ballpoint pen is mostly used by all of us, but while writing or using it, have you ever noticed that there is a hole in the pen's cap. Why is it so, is there ...

When it first hit the market in 1946, a ballpoint pen sold for around $10, roughly equivalent to $100 today. Competition brought that price steadily down, but Bich’s design drove it into the ground.

Ballpoint pens distribute fast-drying ink without the ink drying in the pen itself. It uses a thick, oil-based ink that is dispersed by a small ball in a socket at the head of the pen.