electron optics: the branch of electronics that deals with beams of electrons and their focusing and deflection by magnetic fields
electronics: the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices
chop suey: meat or fish stir-fried with vegetables (e.g., celery, onions, peppers or bean sprouts) seasoned with ginger and garlic and soy sauce; served with rice; created in the United States and frequently served in Chinese restaurants there