According to string theory, six space-time dimensions cannot be measured except as quantum numbers of internal particle properties because they are curled up in size of the order of A) 10−³⁵ m. B) 10−¹⁵ m. C) 10−¹⁰ m. D) 10−⁸ m. E) 10−³ m.

Question

Quizplus · Accepted Answer

In string theory, the extra dimensions are compactified at the Planck length, which is approximately 10^-35 meters.

According to String Theory, Six Space-Time Dimensions Cannot Be Measured