a comparison of the differences between experimental results and theoretical values, expressed as a percentage; the formula is [(|theoretical value - experimental value|)รท theoretical value] x 100
1857 - William A. Noyes born: first chief chemist of U.S. Bureau of Standards (now National Institute of Standards and Technology); editor of Journal of the American Chemical Society
1886 - Ian M. Heilbron born: synthesis of natural products such as vitamins A and D.
1857 - 
