Telecom

Airlines cancel some flights after reduced 5G rollout in US

Some flights to and from the U.S. were canceled on Wednesday even after AT&T and Verizon scaled back the rollout of high-speed wireless service that could interfere with aircraft technology that measures altitude.

Other

NOAA satellites helped rescue 340 people in 2018

The pilot of the rowboat Alba had a noble goal – to raise awareness and funds for the Scottish Association for Mental Health. And he was going to row 3,400 nautical miles, from Norfolk, Va., to his home in Scotland, to ...

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Radio

Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing (modulating) some property of the radiated waves, such as amplitude, frequency, or phase. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected and transformed into sound or other signals that carry information.

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