PHYS208 Fundamentals of Physics II

Quote of the Day

The ampere is "... that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible cross-section, and placed one meter apart in vacuum, would produce between these conductors a force equal to 2 x 10-7 newtons per meter of length." (1946)

Adapted from the "The International System of Units (SI)," National Bureau of Standards Publication 330, 1972 ed. as reported by HRW on page A1.

Last updated Nov. 21, 1997.