User:Darrell Bonn/Notebook/307L Lab book/lab 3 diffraction

=e/m of electron=

Temp
According to this article the Earths magnetic field at the surface of the Earth ranges between 30 and 60 micro tesla (0.3-0.6 gauss)[| wikipedia: earth's magnetic field]

B = ((7.8 × 10−4) * I ) weber/m^2: weber/m^2 = tesla