An international team of researchers has developed a way to create non-radiating sources of electromagnetism. In their paper published in the journal Physical Review Letters, the group describes their technique and how well ...
By cleverly analyzing the results, the algorithm can deduce the shape, size and layout of a room, as well as pick out in the presence of objects or people. The results are displayed as a video feed which turns the echo data ...
General Physics
Apr 30, 2021
0
87
On Oct. 29, mission operators sent a series of commands to NASA's Voyager 2 spacecraft for the first time since mid-March. The spacecraft has been flying solo while the 70-meter-wide (230-foot-wide) radio antenna used to ...
Space Exploration
Nov 4, 2020
0
3845
When it comes to electronics, bigger usually isn't better. This is especially true for a new generation of wearable communication systems that promise to connect people, machines and other objects in a wireless "internet ...
Nanomaterials
Nov 20, 2019
0
70
A new type of pocket-sized antenna, developed at the Department of Energy's SLAC National Accelerator Laboratory, could enable mobile communication in situations where conventional radios don't work, such as under water, ...
General Physics
Apr 12, 2019
2
612
How can you make a high-frequency MRI machine more precise? By taking an electrical engineering approach to creating a better, uniform magnetic field.
General Physics
Oct 31, 2018
0
88
High-frequency antennas transmit radio waves across vast distances and even over mountain ranges using very little energy, making them ideal for military communications. These devices, however, have one big problem: They ...
Engineering
Apr 26, 2016
5
30
(Phys.org) —A Stanford engineering team has built a radio the size of an ant, a device so energy efficient that it gathers all the power it needs from the same electromagnetic waves that carry signals to its receiving antenna ...
Engineering
Sep 10, 2014
15
0
The future of satellite technology is getting small—about the size of a shoebox, to be exact. These so-called "CubeSats," and other small satellites, are making space exploration cheaper and more accessible: The minuscule ...
Space Exploration
Sep 6, 2013
0
0
An unmanned Russian spaceship carrying 2.5 tonnes of cargo may be unable to properly dock with the International Space Station after its navigation antenna failed to properly deploy, Interfax said on Thursday.
Space Exploration
Apr 25, 2013
1
0
