Top Bottom
Top Bottom
Why in a mirror does left and right reverse but not top and bottom?
I would have thought that left, right, top, bottom were all of the same type ie they all define position maybe ultimately in relation to the human body.
If they are the same kind of thing why should 'left and right' be swapped in a mirror but not 'top and bottom'. One can see why by drawing imaginary lines from the body to it's image but this means that top and bottom and left and right cannot be the same kind of thing. So how could the difference be defined.
Richard B and Dr D - yes but what is the difference between left and right and top and bottom.
So far as I can see we attribute top to the head half , bottom to the feet half, left to the half containing the heart and right to the other half. They are all defintions of halves of the body how can a physical law , reflection, treat apparently the same kind of thing (a half of the body) differently unless they are not the same thing in which case how do they differ?
Excellent excellent question. First one to make me THINK today.
A mirror is an exact reflection of an image that is in front of it. The bottom stays bottom, the top stays top, left stays left and right stays right.
It is only a reverse image of left to right when we use our brains to imagine ourselves in the position of the reflection.
In other words, if you extend your left arm, in the mirror it would look like you extended your right arm.
However, the pure reflection in the mirror still shows the arm being extended on the left side. It is only when you place yourself inside yourself of your own reflected body, that you then imagine that it looks like your right arm was extended.
The reason your brain doesn't do the same with regards to up and down is because it doesn't have to. Remember, the pure reflection keeps everything the same - top on top, bottom on bottom, left on left and right on right. Only when you place yourself inside of your reflection do you imagine left became right and vice versa.
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