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.
James Madison, the Father of the U.S. Constitution, did not sign the Constitution as he was serving as the U.S. officer in France during that time. Other dignitaries who did not ratify the constitutional document included the representatives of Rhode Island, Samuel Adams, Patrick Henry, Thomas Paine, and John Adams. The youngest person to sign the constitution was Jonathan Dayton (26) of New Jersey, while the oldest one was Benjamin Franklin (81) of Pennsylvania.