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).
Now a blood pressure of 120/80 is considered normal, and blood pressure readings of 130â139 are considered pre-hypertension. Readings above 140/90 are considered high blood pressure, and the current thinking is that anyone falling into this category should be taking medication to lower blood pressure.urrently the textbook definition of normal blood pressure is 120/80 mmHg. But the definition of normal has changed over the years. At one time, it was believed that normal systolic blood pressure was 100 plus your age. In the 1970s, intervention wasn't even recommended until pressures exceeded 165/95.