In regard to physics, what is the 4th dimension currently portrayed as? Time, another physical, other…? Particle Physics Beyond the Standard Model: This is a two part question. Since the late 1970's what departure or changes, if any, have been made to the string theory regarding its existance in 10 and 26 dimensions? In addition, are there changes in vibrations, clockwise for 10 counter-clockwise 26 dimensions?