and where can i find a diagram of it?
You are making it difficult on your employer and fellow employees about your hours. Employers do not like employees who always change shifts and switch hours. If you are always complaining and whining, then they have a right to remove you from the schedule. They have a business to run and are not there to work around your schedule. Try to find work immediately as well, because the pregnancy excuse won't work.
Actually, it is none of these: A leyden jar is excellent for storing electricity. A capacitor will also store electricity, but has other characteristics too. A Van de Graff machine, or van de graff generator is used to generate high electrostatic voltages A lightening rod will discharge powerful electrical charges - like lightening - into the earth. A compass might be a reasonable device to sense electric field lines, since magnetic field lines are always present when there are electric field lines.
