What is the velocity of a person's blood flow relative to the earth?
Dec 23, 2014 #1 David Schutz 1 0 What is the velocity of a person's blood flow relative to the earth?
Dec 23, 2014 #3 Vanadium 50 Staff Emeritus Science Advisor Education Advisor 2021 Award 28,217 12,879 Why is this a question about spacetime?