by Guest » Tue Sep 06, 2005 11:55 pm
Are you familiar with scientific notation? An example would be that 2000 can also be written as 2 x 10^3. The "e" is another way of representing scientific notation, and 2e3 means the same thing. )A lot of places would use "E" because e has a different meaning in mathematics.)
There are 25.4 mm in an inch. A mm is 1E-3 m. 1 nm is 1e-9 m, so there are 10^6 nm (or 1e6) in 1 mm. There are 25.4e6 nm in 1 inch.