Back to our radio signal. The electrons in our wire ... of the back and forth movement of electrons. If the wave has a frequency of 200,000 Hz (cycles per second), the electrons in the wire ...

The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude ... With FM, the frequency (the number of times each second that the current changes direction ...

Astronomers have detected rare radio waves from a binary star system, challenging previous ideas about their origins. These pulses, lasting from milliseconds to minutes, arrive every 125.5 minutes.

The question “are we alone in the universe?” has fascinated people for centuries. In 1959 two Cornell University physicists described how we might answer that question through interstellar ...

You need to know about these quantities used in waves - what they mean, the symbols used for them and the units used to measure them. Don't get confused with this quantity frequency. It is not a ...

The instrument is a low-frequency radio spectrometer to provide radio spectra from 10 kHz - 10 MHz (or possibly 30 MHz) with 1-second resolution. These Radio wave Observations at the Lunar Surface of ...