When the normal or perpendicular components of the contact forces are all identically zero, the contact becomes frictionless. In addition, if the tangential or parallel components are also identically zero then a true vacuum emerged. This is where interactions between matter and energy do not exist, a state of pure nothingness – the true vacuum. However, empirical data of quantum fluctuation make it almost impossible for true vacuum to exist. This is verified by the quantized normal modes of quantum field theories.


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