Engineering
Medical processes like imaging often require cutting someone open or making them swallow huge tubes with cameras on them. But what if could get the same results with methods that are less expensive, invasive and time-consuming?
Aug 20, 2018
0
145
Engineering
A new kind of MRI component in the shape of a glove delivers the first clear images of bones, tendons and ligaments moving together, a new study finds.
May 8, 2018
0
494
Telecom
Five years ago, a team of researchers from the University of Texas at Austin boarded an $80-million yacht with the intent of trying to fool the vessel's navigation system and stealthily push it off course.
Mar 23, 2018
0
33
Security
We read many stories about security sleuths who discover how thieves and mischief-makers break into accounts and networks to plant bad stuff and steal personal data.
Engineering
Whether it's improved traffic patterns, energy savings or reduced noise pollution, cities across the world are actively introducing "smart" technologies to improve the quality of life for their citizens. But with costs and ...
Dec 1, 2017
0
24
Telecom
A team of researchers led by Dartmouth College may have finally solved the problem of how to inexpensively improve wireless signal strength for indoor spaces with multiple rooms. The same technology for enhancing office and ...
Nov 8, 2017
0
14
Engineering
University of Washington researchers have demonstrated for the first time that devices that run on almost zero power can transmit data across distances of up to 2.8 kilometers—breaking a long-held barrier and potentially ...
Sep 13, 2017
2
295
Engineering
Radio frequency ID tags were supposed to revolutionize supply chain management. The dirt-cheap, battery-free tags, which receive power wirelessly from scanners and then broadcast identifying numbers, enable warehouse managers ...
Aug 25, 2017
1
163
Energy & Green Tech
(Tech Xplore)—What would you say to a cell phone that works without a battery? A barest-bone keypad and LD light as quite unsnazzy components? If you cannot live without showy capabilities of smartphones then you might ...
Engineering
(Tech Xplore)—Future concepts from BAE Systems include a laser developed atmospheric lens. A video shows the concept and explains the thinking behind it.
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.
This text uses material from Wikipedia, licensed under CC BY-SA
