Information theory, which was developed by Claude Shannon starting in the late 1940s, deals with questions such as how quickly information can be sent over a noisy communications channel. Both the information carriers (e.g., ...
(Phys.org)—How secure is completely secure? In the world of secure communication, a scheme may be completely secure until it's not—that is, until an attack is proposed that reveals a weak spot in the scheme. This is what's ...
Terahertz radiation could one day provide the backbone for wireless systems that can deliver data up to one hundred times faster than today's cellular or Wi-Fi networks. But there remain many technical challenges to be solved ...
Optics & Photonics
Sep 14, 2015
69
5174
(PhysOrg.com) -- New imaging and high capacity wireless communications systems are one step closer to reality, thanks to a millimeter wave amplifier invented at the University of California, San Diego and unveiled on Feb ...
Engineering
Feb 11, 2009
4
0
Although their primary purpose is to look for exoplanets, observatories like the Kepler Space Telescope and the Transiting Exoplanet Survey Satellite (TESS) have supplied a vast amount of data on stellar flares, detected ...
Astronomy
Apr 15, 2024
0
879
Nearly six years have passed since Hurricane Maria made landfall in Puerto Rico. The historic storm, one of the deadliest in U.S. history, significantly damaged more than 80% of the island's electrical power system, leading ...
Environment
Aug 1, 2023
0
40
NASA called off the launch of its mighty new moon rocket on its debut flight with three test dummies aboard Monday after a last-minute cascade of problems culminating in unexplained trouble related to an engine.
Space Exploration
Aug 29, 2022
5
297
Using data from the eruption of the underwater volcano near Tonga in 2022, a research group at Nagoya University in Japan has used disturbances in the earth's upper atmosphere to track the airwaves that cause tsunamis. Their ...
Earth Sciences
Jul 14, 2022
0
20
Energy from the solar wind interacting with the magnetospheric 'bubble' around Earth creates waves of energy that appear to stand still.
Planetary Sciences
Oct 6, 2021
0
897
Cell lines injected with free nucleic acid are widely used for drug discovery and disease modeling. To avoid genetically mixed cell populations, investigators use dilution techniques to select single cells that will then ...
Bio & Medicine
Oct 2, 2020
0
51
