The current to be measured is passed through the coils of the electromagnet, then enters the mercury disk at the centre, flows through it radially in all directions, and emerges at the periphery.
When a promising new finding emerges, that information will be shared with other farms and those techniques will be tested there.
Dehra Dun only emerges from the mists of legend into authentic history in the 17th century A.D., when it formed part of the Garhwal kingdom.
Congregationalism proper, as a theory of the organized Christian life contemplated in the New Testament, re-emerges only at the Reformation, with its wide recovery of such aspects of evangelic experience as acceptance with God and constant access' to Him through the sole mediation of Christ.
An important point to make here is this: Historically, the welfare state only emerges to solve problems that private charities either cannot or will not solve.