They're supposed to be spatial dimensions, just like the three we're familiar with every day.<br /><br />However, the theory goes that they are "curled" up on themselves. So they don't extend very far in any direction..enough so that current detection methods are inadequate (though they may be adequate in the future).<br /><br />So, when you move your hand, you're moving in the 3 standard ones, but you also move absurd fractions of a meter in these other dimensions. Since they are supposed to be "curled" if you move far enough (which isn't very far, as they're very small and tightly curled) you'll end up where you started...in those dimensions. Because of this, they don't impact the larger world around us much. <div class="Discussion_UserSignature"> <p align="center"><font color="#c0c0c0"><br /></font></p><p align="center"><font color="#999999"><em><font size="1">--------</font></em></font><font color="#999999"><em><font size="1">--------</font></em></font><font color="#999999"><em><font size="1">----</font></em></font><font color="#666699">SaiphMOD@gmail.com </font><font color="#999999"><em><font size="1">-------------------</font></em></font></p><p><font color="#999999"><em><font size="1">"This is my Timey Wimey Detector. Goes "bing" when there's stuff. It also fries eggs at 30 paces, wether you want it to or not actually. I've learned to stay away from hens: It's not pretty when they blow" -- </font></em></font><font size="1" color="#999999">The Tenth Doctor, "Blink"</font></p> </div>