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In string theory, if strings are 1-dimensional, how do they vibrate in more than 1 dimension? E.g. If a piece of paper (defined by dimensions ,y) was truly 2 dimensional, could you bend it along the z-axis?

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In string theory, if strings are 1-dimensional, how do they vibrate in more than 1 dimension? E.g. If a piece of paper (defined by dimensions ,y) was truly 2 dimensional, could you bend it along the z-axis?	2183
Why does every element have the same number of protons as it does electrons?	3