Bah.. el arcoiris es un círculo entero,pero solo se ve la mitad, eso no tiene gracia xDDDD
Lo del espejo me parece que me he explicado mal :P Si hubiera puesto lo de las letras se hubiera entendido mejor
One way to start to get a handle on this is to take a piece of paper with your name written on it. Look at it in the mirror and it will be reversed. Now turn it vertically. You will find that the lettering is reversed, but it is not upside down. That should start to give you a clue as to what is going on. Now take your finger and point to the first letter in your name, both on the paper and on the mirror. Notice that there is a one-to-one correspondence -- if the letter appears on the left hand side of the paper from your perspective, it appears on the left hand side of the mirror.
Take a piece of thin, translucent paper and write your name on it. Stand in front of a mirror and hold the paper up so that you can read the paper normally. Now look in the mirror. You are seeing the bak of the translucent sheet in the mirror, and the word is not reversed -- it looks completely normal. Now turn the paper over and look at it in the mirror. It is reversed, but so are the letters on the bak of the translucent sheet. Note that you turned the paper over -- you reversed it!
In other words, the reason why letters look reversed in a mirror is because you are presenting them to the mirror reversed. The reason why someone coming toward you can read the message on your T-shirt is because the letters on your T-shirt are reversed (from your perspective) when you wear it. If you printed the words on the T-shirt so that you could read them (from the inside of the shirt), the words would look reversed to an approaching person but they would look great in a mirror.
Y no no recuerdo que me lo explicaran en clase pero por lo menos ahora ya se como funciona