Ebonite rods
Elastic rings
Electric bell
Electric chimes
Electric egg
Electric fly
Electric glass piercer 1
Electric glass piercer 2
Electrometer
Electromagnetically excited tuning-fork
Electromagnetic tuning fork
Electro-magneto electric machine
Electromagnet with armature
Endosmometer
Epidiascope
Equilateral prism
Exciter (discharger)