Science, Maths & Technology
Electromagnetism: testing Coulomb’s law
...becomes r sub 12 times r hat sub 12 equals bold r sub one minus bold r sub two full stop Equation label: (7) This notation is convenient because the indices 1 and 2 are in the same order on both sides of the equation. However, remember that the displacement is from q sub two to q sub one . The left-hand index labels the end-point and the right-hand index labels the...