Is a 'moment' an actual measurement of time?

Yes. In this case, Wikipedia confirmed my suspicions, though I must admit, I would have sworn it was around 3 second. "A moment (momentum) was a medieval unit of time. The movement of a shadow on a sundial covered 40 moments in a solar hour. read more

"A moment (momentum) was a medieval unit of time. The movement of a shadow on a sundial covered 40 moments in a solar hour. An hour in this case means one twelfth of the period between sunrise and sunset. read more

A moment (momentum) was a medieval unit of time. The movement of a shadow on a sundial covered 40 moments in a solar hour. An hour in this case means one twelfth of the period between sunrise and sunset. read more

A moment can be anywhere from a few seconds, up to a minute. Generally, a moment is defined as a point in time lasting from 1-3 seconds. In Old English, a moment was an exact measurement of time being 1.5 seconds or 1/40th of one minute. read more