Sometimes, there are too many choices in this world. My benchtop function generator can output a sine, square, or saw wave anywhere from 0.01 Hz up to 60 MHz? Way too many choices. At least, that’s ...

Sound vibrations leave the singer's mouth. The higher the pitch of the sound, the higher the frequency, or number of vibrations in a given amount of time. The sound enters the microphone, where it is ...

Saturday morning is our coldest since late February. Many are waking up to temperatures in the low-to-mid 20s early in the day. • Saturday: Times of sun and clouds. Highs in the upper 40s. Other WRAL ...