Confusion and a lot of questions exist as to detonation and pre-ignition. Sometimes you hear mistaken terms like pre-detonation. Detonation is one phenomenon that is abnormal combustion. Pre-ignition is another phenomenon that is abnormal combustion.
From Wikipedia, the free encyclopedia. Martha Herbert is an American physician and assistant professor of neurology at Harvard Medical School and pediatric neurologist at Massachusetts General Hospital. Herbert is also director of the TRANSCEND program at the Athinoula A. Martinos Center for Biomedical Imaging.
Martha Wayles Skelton Jefferson. Martha Wayles Skelton Jefferson (October 19, 1748 O.S. â September 6, 1782) was Thomas Jefferson's wife. She was born at The Forest, the plantation home of her father John Wayles. Her mother, Martha Eppes Wayles (1721-1748), died just a week after her daughter was born. Martha Wayles was married first to Bathurst Skelton on November 20, 1766.