If we record the ground motion at a single location for a range of time, we can measure the time between peaks in the motion, which we call the wave period. Another important term is frequency, which is the inverse of the period, or one divided by the peak-to-peak time between wave crests.
The Universities and Colleges Admissions Service (UCAS) is a UK-based organisation whose main role is to operate the application process for British universities.
Related themes. The Ultimate Collector's Series, or UCS, is a subtheme of sets. UCS sets are meant to be more detailed and aimed at older builders. These sets do not generally include Minifigures, but since 2007, most have included at least one.