This diagram shows an example of an AM modulated radio signal ... Frequency modulation is the process of transferring an information signal onto a radio carrier wave by varying the instantaneous ...

The diagram below shows a water wave reflected ... Diffraction affects radio and television signals. Long wave radio signals are much less affected by buildings, hills, tunnels etc.

The radio waves from the direction along the axis arrive at the focus ... How this works is illustrated in the following diagrams based on originals by Dr. Ron Ekers. We can replace the solid surface ...

Freddy Liu, Haowen Lai and Mingmin Zhao, from left, setting up a robot equipped with PanoRadar for a test run.

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 ...

Enter the third room on the right, and the Diagram is a dresser with a large radio on it. On the first floor, head to the room in the upper right-hand corner of the building, near the staircase.

"Very little is known about what causes the formation of magnetars," researcher Kritti Sharma said. "Our work helps to answer this question." ...

In the race to build robots that can navigate any environment, scientists have faced a big challenge: traditional vision ...

Photonic technology can now be used to construct miniature sources of high-frequency radio waves that have exceptional spectral purity. In the early 1980s, researchers at NASA's Jet Propulsion ...

Yet another ambient energy source is electromagnetic (EM) radiation. Now, EM is a broad spectrum, extending from radio waves at one end to gamma rays at the other, and with infra-red, visible ...

The classic crystal radio was an oatmeal box with some wire and a few parts. [Michael Simpson] has something very different. He found an assembled Philmore “selective” radio kit. The simple ...