Ricocheting Radio Waves Monitor the Tiniest Movements in a Room
Radio waves reveal person's presence in a room, even beyond the sensor's line of sight
radio waves
Solar Flares Disrupted Radio Communications during September 2017 Atlantic Hurricanes
An unlucky coincidence of space and Earth weather in early September 2017 caused radio blackouts for hours during critical hurricane emergency response efforts
New Metamaterial Lens Focuses Radio Waves
Device could improve satellite and molecular imaging.