Herdwick a "smit") of marking sheep for ownership. Before chemical dyes became available, this dye was made from either iron ore or graphite mixed with grease. For many years the legal method of identifying a particular shepherd's sheep were notches cut out of a sheep's ear, called "lug" marks—now replaced by ear tags. Herdwick The Herdwick is a breed of domestic sheep native to the Lake District of Cumbria in North West England. The name "Herdwick" is derived from the Old Norse "herdvyck", meaning sheep pasture. Though low in lambing capacity and perceived wool quality when compared to more common commercial
Alexander Smits Alexander Smits Dr. Alexander Smits (born December 25, 1948) is the Eugene Higgins Professor of Mechanical and Aerospace Engineering at Princeton University. He is also the director of the Gas dynamics laboratory at Princeton. Smits received his Bachelor of Science in mechanical engineering from the University of Melbourne, Australia in 1970. Subsequently he received his Ph.D. from Melbourne in 1975. Smits is an expert in the areas of turbulence and fluid mechanics, and is also the chief editor of Efluids.com, a website designed for students and researchers to share information about fluids. He is also currently an associate editor for