The twin paradox

One of the most fascinating things to me are the paradoxes. Its something that’s true but its false, its something that’s right but it’s wrong, it’s something that it is not!

There are a lot all around us, and I will try to show some of them in future posts.

Lets see one very simple:

How many of you have already seen a page in a book with the sentence:

“This page was intentionally left blank”

This is a paradox! If the page was really blank there were no words in it. But the words are in it to say it, but they say the opposite. We understand it, but the meaning it is true and it is at the same time false.

The video below show the twin paradox. See if you understand it. (Clue: They are twins but…)

Physics in a Minute: The twin paradox


This video was taken from New Scientist