The physics definition of period is the duration of one complete cycle of a wave or oscillation.
Federalism- a form of government where a group of states, territories, etc., are governed by one central power. Federalists- a member of the Federalist party. Dual Federalism-the federal government and the statesâ government have separate, but equal, powers.
Federalism is a system based upon democratic rules and institutions in which the power to govern is shared between national and provincial/state governments, creating what is often called a federation.The term federalist describes several political beliefs around the world.lso one more aspect of Indian federalism is system of President's Rule in which the central government (through its appointed Governor) takes control of state's administration for certain months when no party can form a government in the state or there is violent disturbance in the state.