Read the following email of proposal where a manager in a bank's call centre (Peter) is asking his manager (Sally) to approve a proposal to enroll his staff on a three day sales training course. From the context, try to guess what the meaning of the words/phrases in bold are.
It spun out of control because part of the software assumed Imperial units and another part assumed metric units. The units by which we now measure physical quantities is called the S.I. (System International) system established in 1960. Within this system, the most commonly used set of units in physics are M.K.S (Metres, Kilograms, Seconds) system. The basic units are shown in Table.
The ampere was then defined as one coulomb of charge per second. In SI, the unit of charge, the coulomb, is defined as the charge carried by one ampere during one second. In the future, the SI definition may shift back to charge as the base unit, with the coulomb defined in terms of the elementary charge on electrons and protons (one coulomb equals the charge of roughly 6.242 Ã 10 18 protons).