Shinya Hasegawa and colleagues at Tokai University have developed a refrigerator (107 C) powered only by waste heat that generated sound waves in an innovative multistage traveling wave thermoacoustic engine. The refrigerator ...
Energy & Green Tech
Dec 12, 2016
0
118
Kids and dogs understand the force of air, when they stick their hands and heads out of moving cars only to feel them pushed back. It may be invisible, but air is like a see-through net dragging a vehicle back as it strains ...
Plasma Physics
Dec 23, 2013
0
0
Near the end of the movie Apollo 13, which depicts the harrowing journey of the three astronauts aboard the aborted 1970 lunar mission, the tension mounts in textbook fashion. As the spacecraft hurdles into Earth's atmosphere ...
Plasma Physics
Jun 16, 2015
3
1478
Terahertz radiation, the no-man's land of the electromagnetic spectrum, has long stymied researchers. Optical technologies can finagle light in the shorter-wavelength visible and infrared range, while electromagnetic techniques ...
General Physics
Aug 4, 2015
3
127
(Phys.org) -- In a cover article in The Journal of Applied Physics, a team of Penn State researchers has designed and computationally tested a type of manmade metamaterial capable for the first time of manipulating a variety ...
Optics & Photonics
Aug 9, 2012
2
0
Just like their biological counterparts, hardware that mimics the neural circuitry of the brain requires building blocks that can adjust how they synapse, with some connections strengthening at the expense of others. One ...
General Physics
Oct 16, 2018
7
169
For most of us, a modern lifestyle without polymers is unthinkable… if only we knew what they were. The ordinary hardware-store terms we use for them include "plastics, polyethylene, epoxy resins, paints, adhesives, rubber"—without ...
Polymers
Aug 9, 2013
0
0
A tattoo that is warning you for too many hours of sunlight exposure, or is alerting you for taking your medication? Next to their cosmetic role, tattoos could get new functionality using intelligent ink. That would require ...
General Physics
Apr 16, 2019
0
15
In many respects, metamaterials are supernatural. These manmade materials, with their intricately designed structures, bend electromagnetic waves in ways that are impossible for materials found in nature. Scientists are investigating ...
Condensed Matter
Nov 14, 2012
8
0
A team of researchers from the University of Twente and from Philips in the Netherlands has succeeded in taking an important step in understanding how light is scattered, absorbed and re-emitted in white light emitting diodes ...
General Physics
Feb 26, 2016
0
43
