Sending electromagnetic waves into the air. In 1894, Marconi transmitted the first radio waves. The first commercial radio station to transmit audio frequencies was KDKA in Pittsburgh ...

The first steps toward inventing radio involved discovering electromagnetic waves and their potential ... that by sending the first long-distance transmission of human voice and music from ...

FM radio works the same way that AM radio works. The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude, or overall strength, of the signal is varied to ...

A case in point is the reflection from and transmission through material partitions of acoustic waves.

The presence of free electrons in the flow field has been known to hinder the transmission and reception of radio-waves. Historically, this communications problem has been of subsidiary concern in ...

At double the width of our Milky Way galaxy, this jet of radio waves is the biggest ever detected so early in the history of the universe, astronomers reported Thursday. Radio jets like this are ...

In a major development, researchers have created a transparent device that can harvest energy from both radio waves and sunlight ... while enabling the efficient transmission of visible light ...

STRL has previously developed a millimeter-wave 4K/8K wireless camera that is capable of 200-Mbps-class transmission at low latency by applying the single carrier - frequency domain equalization ...

Information is coded into the wave before transmission, which can then be decoded when the wave is received. Television and radio systems use this principle to broadcast information. Microwaves ...

Information is coded into the wave before transmission, which can then be decoded when the wave is received. Television and radio systems use this principle to broadcast information. Infrared ...