Question

Fluorescent lights and machinery with motors or transformers are common sources of ________ emissions.

Answer 1

Fluorescent lights and machinery with motors or transformers are common sources of electromagnetic emissions due to the nature of their operation, which involves electrical discharges and inductive components.

Step-by-step explanation:

Fluorescent lights and machinery with motors or transformers are common sources of electromagnetic emissions. In the case of fluorescent lights, an electric discharge in mercury vapor causes atomic emissions from mercury atoms, which is then converted into visible light by a fluorescent material coating inside the tube. This process is more efficient than incandescent light sources, as it converts electrical energy into visible light about four times as effectively. Conversely, machinery with motors or transformers can generate electromagnetic fields (E-fields) during their operation due to the flow of electricity and the presence of inductive components.