To make headway on the mystery of consciousness, some researchers are trying a rigorous new way to test competing theories.
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A trio of researchers at Columbia University has found more evidence showing that sound waves carry mass. In their paper published in the journal Physical Review Letters, Angelo Esposito, Rafael Krichevsky and Alberto Nicolis describe using effective field theory techniques to confirm the results found by a team last year attempting to measure mass carried by sound waves.
For many years physicists have felt confident that sound waves carry energy—but there was no evidence to suggest they also carry mass. There seemed to be no reason to believe that they would generate a gravitational field. But that changed last year when Nicolis and another physicist Riccardo Penco found evidence that suggested conventional thinking was wrong. They had used quantum field theory to show that sound waves moving through superfluid helium carried a small amount of mass with them. More specifically, they found that phonons interacted with a gravitational field in a way that forced them to carry mass along as they moved through the material. In this new effort, the researchers report evidence that suggests the same results hold true for most materials.
Using effective field theory, they showed that a single-watt sound wave that moved for one second in water would carry with it a mass of approximately 0.1 milligrams. They further note that the mass was found to be a fraction of the total mass of a system that moved with the wave, as it was displaced from one site to another.
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(3D-printed heart scaffold)
As the head of the University of Illinois Urbana-Champaign’s innovative Cancer Center, Bhargava has been plugging away at injecting more advanced engineering solutions into medical problems. The freeform 3D printer is one of the first futuristic achievements of that effort.
But Bhargava’s project is just one of a wave of technologies that stand to transform medicine and healthcare as we know it; to make them faster, more accurate, and hopefully, drastically more affordable. Microneedle patches, handheld diagnostic machines, and better sensing capabilities, as well as 3D bioprinting, are just a few of the technologies coming to a doctor’s office near you—or maybe even into your home—in the next decade.
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Jetpack Aviation has leap-frogged its own flying car project with the announcement that it’s taking pre-orders now on a self-stabilizing, jet turbine-powered flying motorcycle capable of 150 mph speeds, 20 minute endurance and 15,000 ft altitudes.
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Samsara Therapeutics has completed a seed financing round in collaboration with Apollo Ventures, a venture capital company and biotech incubator that supports longevity research and treatments for age-related diseases.
Samsara Therapeutics, Inc. (“Samsara,”) a platform biotechnology startup engaged in the discovery and development of compounds that address the primary molecular causes of aging, announced today the closing of a seed financing round. The financing was led by Apollo Ventures, a life sciences venture capital firm and company builder working across Europe and North America.
Additionally, on February 19th, 2019 Nature Communications published a peer-reviewed paper, “The flavonoid 4,4′-dimethoxychalcone promotes autophagy-dependent longevity across species” authored by Samsara’s scientific team [1]. The paper demonstrates the capability of the Samsara platform to identify novel MoA geroprotective small molecules that extend healthy lifespan across species and which are protective in mammalian models of disease.
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