The idea of finding and raising the Titanic was thought of very soon after the sinking of the vessel. However, the first successful attempt at locating the Titanic Wreck was in 1985 by a French and American expedition led by Jean-Louis Michel and Dr. Robert Ballard.
The higher the pressure, the harder the heart has to pump. Normal adult blood pressure is defined as a blood pressure of 120 mm Hg1 when the heart beats (systolic) and a blood pressure of 80 mm Hg when the heart relaxes (diastolic).
Definition and Normal Range. Pulse pressure is the difference between the systolic blood pressure and the diastolic blood pressure. The systolic blood pressure is sometimes known to non-health professionals as the top number. It represents the amount of pressure exerted on the blood vessels when the ventricle of the heart contracts (systole).