In Big Bang Theory (BBT), the first 1 * 10 ^ -43 seconds of the existence of our universe is called the Planck Epoch. Planck Time as it is referred to is possibly the shortest meaningful increment of time in BBT. Is it correct to write Planck Time as 1/10 followed by 42 zeros? That would be 1/10,000,000,000,000,000,000,000,000,000,000,000,000,000,000 seconds.
Sure...that's what 10^{-43} means. As you can see, it's much more convenient to write things this way Please Register or Log in to view the hidden image!