1. The problem statement, all variables and given/known data I have to find an expression for the magnetic field of an elliptical solenoid. This is an actual solenoid sitting on the desk next to me, but even an infinite/very long solenoid approximation would be a wonderful start. 2. Relevant equations Biot-Savart law 3. The attempt at a solution Therein lies the problem... I've not the slightest clue where to start. I just started working in a lab at my school and the grad student here left me this problem while he's away on vacation. I've only seen Biot-Savart from my Intro to Electromagnetism class, so I'm not to savvy with it yet. A poke in the right direction would be greatly appreciated!