Electromagnetic section
Electromagnetic section was among one of the departmental subdivisions of the astrophysics lab utilized aboard Federation starships during the mid-23rd century.

During the visit of the  to Gamma Trianguli VI in 2267, and after it was determined that Vaal, the ancient underground computer controlling the planet probably did not have any great power reserves, due to his frequent "feedings", Captain James T. Kirk wanted to determine what happened if Vaal's power were to be weakened as it approached its feeding time. In order to make this determination, he ordered Spock to get a hold of the electromagnetic section of the astro-physics lab to "get an estimate of the total energy being expended against the ship and measure it every hour." ()
Spacecraft sections