Pentamodes, proposed in 1995 by Graeme Milton and Andrej Cherkaev, have been purely theoretical but three-dimensional transformation acoustics ideas, for example inaudibility cloaks, acoustic prisms or new loudspeakers, could become reality in the near future.
The mechanical behavior of materials like water (or even gold) is expressed in terms of compression and shear parameters. For examples, water as an incompressible fluid that can barely be compressed in a cylinder is described through the compression parameter, but that it can be stirred in all directions using a spoon is expressed through the shear parameters.
The Office of Naval Research (ONR) wants to develop a solid-state laser weapon prototype that will demonstrate multi-mission capabilities aboard a Navy ship, officials announced May 8.
In case you were worried that America was only 25 years ahead of the rest of the world in military capability, this is good news.
The proposed solid-state laser weapon would help sailors defeat small boat threats and aerial targets without using bullets. So, people who hate bullets will be thrilled.
ONR will host an industry day May 16 to provide the research and development community with information about the program. A Broad Agency Announcement is expected to be released thereafter to solicit proposals and bids.
Poor people in developing nations have been caught in a cultural tug-of-war over how to best keep them from dying of Malaria. What they need to break the impasse between anti-science acolytes who think "Silent Spring" had any science in it and corporate chemical manufacturers is...a fashion show.
Frederick Ochanda, postdoctoral associate in Cornell's Department of Fiber Science&Apparel Design and a native of Kenya, teamed up with Matilda Ceesay, a Cornell apparel design undergraduate from Gambia, to create a hooded bodysuit embedded at the molecular level with insecticides for warding off mosquitoes infected with malaria, a disease estimated to kill 655,000 people annually on the continent.
Here's a pretty good kickstart for a science resume; inventing a disease-fighting, anti-aging compound using nano-particles from trees at age 16.
The so-called 'reality-based community' hates popular culture, unless they like it ironically. Sports most of all.
But, argues George Washington University Professor of Anthropology Jeffrey P. Blomster, the ballgame is associated with the rise of complex societies, so understanding its origins also illuminates the evolution of socio-politically complex societies.
The sexual maturation of female mice has been linked to longevity by researchers.
They had previously established that mouse strains with lower circulating levels of the hormone IGF1 at age six months live longer than other strains. In new work, scientists report that females from strains with lower IGF1 levels also reach sexual maturity at a significantly later age.
The researchers conclude that IGF1 may co-regulate female sexual maturation and longevity. They showed that mouse strains derived from wild populations carry specific gene variants that delay sexual maturation, and they identified a candidate gene, Nrip1, involved in regulating sexual maturation that may also affect longevity by controlling IGF1 levels.
Here's Where Your Backyard Was 300 Million Years Ago
Convergent Evolution Cheat Sheet Now 120 Million Years Old
Synchrotron Could Shed Light On Exotic Dark Photons
The Pain Scale Is Broken But This May Fix It
