Any device that sends out a Wi-Fi signal also emits terahertz waves —electromagnetic waves with a frequency somewhere between microwaves and infrared light. These high-frequency radiation waves, known as "T-rays," are also ...
General Physics
Mar 30, 2020
18
3435
Researchers at the University of Illinois at Urbana-Champaign have replicated one of the most well-known electromagnetic effects in physics, the Hall Effect, using radio waves (photons) instead of electric current (electrons). ...
General Physics
Sep 12, 2019
0
3039
(Phys.org)—In spite of its name, the time reversal of a wave doesn't involve sending the wave back in time, but for scientists, the process is almost as compelling. After a source generates a wave, the wave propagates through ...
Scientists who study the cosmos have a favorite philosophy known as the "mediocrity principle," which, in essence, suggests that there's really nothing special about Earth, the sun or the Milky Way galaxy compared to the ...
Astronomy
Jun 3, 2022
7
2334
Rice University researchers have discovered a fundamentally different form of light-matter interaction in their experiments with gold nanoparticles.
Nanophysics
Nov 30, 2018
26
1554
One of the great joys in mathematics is the ability to use it to describe phenomena seen in the physical world, says University at Buffalo mathematician Gino Biondini.
General Physics
Feb 24, 2016
0
2452
The idea of cloaking and rendering something invisible hit the small screen in 1966 when a Romulan Bird of Prey made an unseen, surprise attack on the Starship Enterprise on Star Trek. Not only did it make for a good storyline, ...
Mathematics
Jun 22, 2015
1
129
Many students learn about the Doppler effect in physics class, typically as part of a discussion of why the pitch of a siren is higher as an ambulance approaches and then lower as the ambulance passes by. The effect is useful ...
General Physics
Aug 3, 2010
21
1
Developing commercial fusion energy requires scientists to understand sustained processes that have never before existed on Earth. But with so many unknowns, how do we make sure we're designing a device that can successfully ...
Plasma Physics
Jun 22, 2023
4
255
Matter is what makes up the universe, but what makes up matter? This question has long been tricky for those who think about it—especially for the physicists. Reflecting recent trends in physics, my colleague Jeffrey Eischen ...
General Physics
Dec 10, 2020
37
651
