Equipment users can detect cavitation audibly, visually, by acoustical instrumentation, by machine vibration sensors, through sonoluminescence measurement or by a decrease or change in performance from that produced under single-phase flow conditions (for example, loss of flow, rigidity and response).
The members of the Constitutional Convention signed the United States Constitution on September 17, 1787 in Philadelphia, Pennsylvania. The Constitutional Convention convened in response to dissatisfaction with the Articles of Confederation and the need for a strong centralized government.
The Signing of the United States Constitution occurred on September 17, 1787, at Independence Hall in Philadelphia, Pennsylvania, when 39 delegates to the Constitutional Convention, representing 12 states (all but Rhode Island, which declined to send delegates), endorsed the Constitution created during the four-month-long convention.