Basically this section that I read told about different , what they can do and what they can not do. It told us that microphones were contained metal diaphragms that vibrate when the sound waves hit them, the vibrations are converted into electric impulses by back plates or coils. The impulses can be amplified, and recorded on the videotape, and can be recorded and stored there for editing along with the pictures. Next the impulses are converted back to sound and which is sent through the TV. Two microphones are really common for TV news. ....